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Prof. Dr. med. Ralph Peterli

Department of Clinical Research
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Kraljević, Marko, Süsstrunk, Julian, Wölnerhanssen, Bettina Karin, Peters, Thomas, Bueter, Marco, Gero, Daniel, Schultes, Bernd, Poljo, Adisa, Schneider, Romano, & Peterli, Ralph. (2025). Long-Term Outcomes of Laparoscopic Roux-en-Y Gastric Bypass vs Laparoscopic Sleeve Gastrectomy for Obesity [Journal-article]. JAMA Surgery. https://doi.org/10.1001/jamasurg.2024.7052

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Bühler, Gaby, Schneider, Romano, Kraljević, Marko, Süsstrunk, Julian, Fourie, Lana, Woellnerhanssen, Bettina, & Peterli, Ralph. (2025). More Anastomotic Ulcers, Less Dumping, and Equal Weight Loss in Long vs. Short Gastric Pouch in Laparoscopic Roux-en-Y Gastric Bypass [Journal-article]. Obesity Surgery, 35(2), 450–456. https://doi.org/10.1007/s11695-024-07645-z

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Poljo, Adisa, Reichl, Jakob J., Schneider, Romano, Süsstrunk, Julian, Klasen, Jennifer M., Fourie, Lana, Billeter, Adrian T., Müller, Beat P., Peterli, Ralph, & Kraljević, Marko. (2025). How preoperative upper gastrointestinal investigations affect the management of bariatric patients: results of a cohort study of 897 patients. Surgical Endoscopy, 39, 153–161. https://doi.org/10.1007/s00464-024-11352-2

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Kermansaravi, Mohammad, Chiappetta, Sonja, Parmar, Chetan, Shikora, Scott A., Prager, Gerhard, LaMasters, Teresa, Ponce, Jaime, Kow, Lilian, Nimeri, Abdelrahman, Kothari, Shanu N., Aarts, Edo, Abbas, Syed Imran, Aly, Ahmad, Aminian, Ali, Bashir, Ahmad, Behrens, Estuardo, Billy, Helmuth, Carbajo, Miguel A., Clapp, Benjamin, et al. (2024). Current recommendations for procedure selection in class I and II obesity developed by an expert modified Delphi consensus. Scientific Reports, 14(1), 3445. https://doi.org/10.1038/s41598-024-54141-6

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Kuemmerli, C., Linke, K., Daume, D., Germann, N., Peterli, R., Müller-Stich, B., & Klasen, J. M. (2024). The PLET (Portable Laparoscopic Endo-Trainer) study: a randomized controlled trial of home- versus hospital-based surgical training [Journal-article]. Langenbeck’s Archives of Surgery, 409(1). https://doi.org/10.1007/s00423-024-03375-z

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Poljo, Adisa, & Peterli, Ralph. (2024). Comment on: Rare events model of the MBSAQIP database: risk of early bowel obstruction following metabolic surgery [Journal-article]. Surgery for Obesity and Related Diseases, 20(12), 1224–1225. https://doi.org/10.1016/j.soard.2024.08.015

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Zwimpfer, Tibor A., Stiegeler, Nadja, Müller, Philip C., Schötzau, Andreas, Fellmann-Fischer, Bernhard, Heinzelmann-Schwarz, Viola, Peterli, Ralph, & Kraljević, Marko. (2024). Comparison of 2D 4K vs. 3D HD laparoscopic imaging systems in bariatric surgery: study protocol for a randomized controlled prospective trial. Trials, 25(1). https://doi.org/10.1186/s13063-024-07983-4

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Poljo, Adisa, Klasen, Jennifer M., Kraljević, Marko, Peterli, Ralph, & Billeter, Adrian T. (2024). Impact of progressive chronic kidney disease stage on postoperative outcomes in metabolic surgery—a propensity-matched analysis using the MBSAQIP database. Surgery for Obesity and Related Diseases, 20, e14–e15. https://doi.org/10.1016/j.soard.2024.07.008

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Poljo, Adisa, Klasen, Jennifer M., Kraljević, Marko, Peterli, Ralph, & Billeter, Adrian T. (2024). Comment on: Elevated HbA1C level and revisional bariatric surgery complications. Surgery for Obesity and Related Diseases, 20, e18–e19. https://doi.org/10.1016/j.soard.2024.08.002

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Poljo, A., Kraljević, M., Klasen, J.M., Süsstrunk, J., Peterli, R., & Billeter, A.T. (2024). Bariatric surgery in patients with lung diseases. Atemwegs- Und Lungenkrankheiten, 50, 518–524. https://doi.org/10.5414/ATX02779

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Poljo, Adisa, Peterli, Ralph, & Kraljević, Marko. (2024). Effects of limb lengths in gastric bypass surgery [Journal-article]. British Journal of Surgery, 111(8). https://doi.org/10.1093/bjs/znae220

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Lazaridis, Ioannis I., Bosch, Angela J.T., Keller, Lena, Low, Andy J.Y., Tamarelle, Jeanne, Moser, Seraina O., Winter, Denise V., Gómez, Cristina, Peterson, Caspar J., Schneider, Romano, Kraljević, Marko, Odermatt, Alex, Vonaesch, Pascale, Peterli, Ralph, Delko, Tarik, & Cavelti-Weder, Claudia. (2024). Metabolic outcomes in obese mice undergoing one-anastomosis gastric bypass (OAGB) with a long or a short biliopancreatic limb. American Journal of Physiology - Endocrinology and Metabolism, 326, E819–E831. https://doi.org/10.1152/ajpendo.00327.2023

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Poljo, Adisa, Tynes, Deborah M., Timper, Katharina, Süsstrunk, Julian, Kraljević, Marko, Peterli, Ralph, Billeter, Adrian T., Müller-Stich, Beat P., & Klasen, Jennifer M. (2024). Breaking down barriers to bariatric care: A qualitative study on how telemedicine could transform patient experiences in a Swiss monocentric setting. BMJ Open, 14. https://doi.org/10.1136/bmjopen-2023-083142

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Peterli, Ralph, Hurme, Saija, Bueter, Marco, Grönroos, Sofia, Helmiö, Mika, & Salminen, Paulina. (2024). Standardized Assessment of Metabolic Bariatric Surgery Outcomes: Secondary Analysis of 2 Randomized Clinical Trials. JAMA Surgery, 159(3), 306–314. https://doi.org/10.1001/jamasurg.2023.6254

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Bueter, Marco, Peterli, Ralph, & Salminen, Paulina. (2024). Editorial Comment on “Therapeutic Options for Recurrence of Weight and Obesity-Related Complications After Metabolic and Bariatric Surgery: An IFSO Position Statement”. Obesity Surgery, 34, 3822–3823. https://doi.org/10.1007/s11695-024-07494-w

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Durrer, Dominique, Pasi, Patrick, Peterli, Ralph, Fischer-Taeschler, Doris, Fontana, Gabriela, Cavadini, Gionata, & Gerber, Philipp A. (2024). Improving obesity management: Insights from the ACTION Switzerland survey of people with obesity, physicians and dietitians. Clinical Obesity. https://doi.org/10.1111/cob.12716

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Kermansaravi, Mohammad, Chiappetta, Sonja, Shikora, Scott A., Musella, Mario, Kow, Lilian, Aarts, Edo, Abbas, Syed Imran, Aly, Ahmad, Aminian, Ali, Angrisani, Luigi, Asghar, Syed Tanseer, Bashir, Ahmad, Behrens, Estuardo, Billy, Helmuth, Boza, Camilo, Brown, Wendy A., Caina, Daniel Oscar, Carbajo, Miguel A., Chevallier, Jean-Marc, et al. (2024). Metabolic and Bariatric Surgeon Criteria—An International Experts’ Consensus. Obesity Surgery, 34, 3216–3228. https://doi.org/10.1007/s11695-024-07395-y

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Poljo, Adisa, Kraljević, Marko, Peterli, Ralph, Müller, Beat P., & Billeter, Adrian T. (2024). Role of sleeve gastrectomy in improving metabolic syndrome: an overview. Updates in Surgery. https://doi.org/10.1007/s13304-024-02038-4

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Steinl, David, Holzerny, Pascale, Ruckdäschel, Stephan, Fäh, David, Pataky, Zoltan, Peterli, Ralph, Schultes, Bernd, Landolt, Susanne, & Pollak, Timo. (2024). Cost of overweight, obesity, and related complications in Switzerland 2021. Frontiers in Public Health, 12. https://doi.org/10.3389/fpubh.2024.1335115

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Wiesler, Benjamin, Rosenberg, Robert, Galli, Raffaele, Metzger, Jürg, Worni, Mathias, Henschel, Mark, Hartel, Mark, Nebiker, Christian, Viehl, Carsten T., Müller, Alexandra, Eisner, Lukas, Pabst, Martina, Zingg, Urs, Stimpfle, Daniel, Müller, Beat P., von Flüe, Markus, Peterli, Ralph, Werlen, Laura, Zuber, Markus, et al. (2024). Effect of a colorectal bundle in an entire healthcare region in Switzerland: results from a prospective cohort study (EvaCol study). International Journal of Surgery (London, England), 110, 7763–7774. https://doi.org/10.1097/JS9.0000000000002123

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Jazi, Amir Hossein Davarpanah, Mahjoubi, Mohammad, Shahabi, Shahab, Alqahtani, Aayed R., Haddad, Ashraf, Pazouki, Abdolreza, Prasad, Arun, Safadi, Bassem Y., Chiappetta, Sonja, Taskin, Halit Eren, Billy, Helmuth Thorlakur, Kasama, Kazunori, Mahawar, Kamal, Gawdat, Khaled, Rheinwalt, Karl Peter, Miller, Karl A., Kow, Lilian, Neto, Manoel Galvao, Yang, Wah, et al. (2023). Bariatric Evaluation Through AI: a Survey of Expert Opinions Versus ChatGPT-4 (BETA-SEOV). Obesity Surgery, 33(12), 3971–3980. https://doi.org/10.1007/s11695-023-06903-w

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Nocera, Fabio, Haak, Fabian, Posabella, Alberto, Angehrn, Fiorenzo Valente, Peterli, Ralph, Müller-Stich, Beat P., & Steinemann, Daniel C. (2023). Surgical outcomes in elective sigmoid resection for diverticulitis stratified according to indication: a propensity-score matched cohort study with 903 patients. Langenbeck’s Archives of Surgery, 408(1). https://doi.org/10.1007/s00423-023-03034-9

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Dirnberger, Amanda S., Süsstrunk, Julian, Schneider, Romano, Poljo, Adisa, Klasen, Jennifer M., Slawik, Marc, Billeter, Adrian T., Müller-Stich, Beat P., Peterli, Ralph, & Kraljević, Marko. (2023). Mid-Term Outcomes After Conversion Procedures Following Laparoscopic Sleeve Gastrectomy. Obesity Surgery, 33, 2679–2686. https://doi.org/10.1007/s11695-023-06734-9

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Peterli, Ralph, & Fox, Mark. (2023). Response to “Letter to the Editor”. Surgery for Obesity and Related Diseases, 19(9), 1078–1079. https://doi.org/10.1016/j.soard.2023.06.001

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Wölnerhanssen, Bettina K., Meyer-Gerspach, Anne C., Nussbaumer, Rahel, Sauter, Matthias, Thumshirn, Miriam, Bueter, Marco, Vetter, Diana, Gubler, Christoph, Morell, Bernhard, Jell, Alissa, Vieth, Michael, Beglinger, Christoph, Peterli, Ralph, & Fox, Mark. (2023). Prospective clinical cohort study: low incidence of Barrett esophagus but high rate of reflux disease at 5-year follow-up after sleeve gastrectomy versus Roux-en-Y gastric bypass. Surgery for Obesity and Related Diseases, 19(7), 707–715. https://doi.org/10.1016/j.soard.2023.02.012

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Saarinen I, Grönroos S, Hurme S, Peterli R, Helmiö M, Bueter M, Strandberg M, Wölnerhanssen BK, & Salminen P. (2023). Validation of the individualized metabolic surgery score for bariatric procedure selection in the merged data of two randomized clinical trials (SLEEVEPASS and SM-BOSS). Surgery for Obesity and Related Diseases, 19(5), 522–529. https://doi.org/10.1016/j.soard.2022.10.036

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Süsstrunk, Julian, Schneider, Romano, Peterli, Ralph, Slawik, Marc, Woelnerhanssen, Bettina, & Kraljević, Marko. (2023). Long-term outcome after biliopancreatic diversion with duodenal switch: a single-center experience with up to 20 years follow-up. Surgery for Obesity and Related Diseases, 19(2), 83–90. https://doi.org/10.1016/j.soard.2022.10.020

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Shimobayashi, Mitsugu, Shetty, Sunil, Frei, Irina C., Wölnerhanssen, Bettina K., Weissenberger, Diana, Weissenberger, Diana, Dietz, Nikolaus, Thomas, Amandine, Ritz, Danilo, Meyer-Gerspach, Anne Christin, Maier, Timm, Hay, Nissim, Peterli, Ralph, Rohner, Nicolas, & Hall, Michael N. (2023). Diet-induced loss of adipose hexokinase 2 correlates with hyperglycemia. eLife, 12, e85103. https://doi.org/10.7554/elife.85103

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Adamina, Michel, Warlaumont, Maxime, Berger, Martin D., Däster, Silvio, Delaloye, Raphaël, Digklia, Antonia, Gloor, Beat, Fritsch, Ralph, Koeberle, Dieter, Koessler, Thibaud, Lehmann, Kuno, Müller, Phaedra, Peterli, Ralph, Ris, Frédéric, Steffen, Thomas, Weisshaupt, Christian Stefan, & Hübner, Martin. (2022). Comprehensive Treatment Algorithms of the Swiss Peritoneal Cancer Group for Peritoneal Cancer of Gastrointestinal Origin. Cancers, 14(17). https://doi.org/10.3390/cancers14174275

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Mongelli F, Horvath Z, Marengo M, Volontè F, La Regina D, Peterli R, & Garofalo F. (2022). Reoperative bariatric surgery after primary laparoscopic gastric plication for morbid obesity: a systematic review and meta-analysis. Langenbeck’s Archives of Surgery, 407(5), 1839–1850. https://doi.org/10.1007/s00423-022-02485-w

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Klasen, Jennifer M., Tynes, Deborah M., Peterson, Caspar J., Schneider, Romano, Timper, Katharina, Peterli, Ralph, Randall, Cameron L., & Delko, Tarik. (2022). The Impact of the COVID-19 Pandemic on Patients from a Bariatric Program: A Qualitative Analysis of Their Perceptions of Health and Well-Being. Healthcare (Switzerland), 10(5). https://doi.org/10.3390/healthcare10050780

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Dirnberger, Amanda S., Schneider, Romano, Slawik, Marc, Linke, Katja, Kraljević, Marko, Wölnerhanssen, Bettina, & Peterli, Ralph. (2022). Management of gallstone disease prior to and after metabolic surgery: a single-center observational study. Surgery for Obesity and Related Diseases, 18(2), 182–188. https://doi.org/10.1016/j.soard.2021.10.006

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Marinucci, Mattia, Ercan, Caner, Taha-Mehlitz, Stephanie, Fourie, Lana, Panebianco, Federica, Bianco, Gaia, Gallon, John, Staubli, Sebastian, Soysal, Savas D., Zettl, Andreas, Rauthe, Stephan, Vosbeck, Jürg, Droeser, Raoul A., Bolli, Martin, Peterli, Ralph, von Flüe, Markus, Ng, Charlotte K. Y., Kollmar, Otto, Coto-Llerena, Mairene, & Piscuoglio, Salvatore. (2022). Standardizing Patient-Derived Organoid Generation Workflow to Avoid Microbial Contamination From Colorectal Cancer Tissues. Frontiers in Oncology, 11. https://doi.org/10.3389/fonc.2021.781833

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Meyer-Gerspach AC, Wingrove JO, Beglinger C, Rehfeld JF, Le Roux CW, Peterli R, Dupont P, O’Daly O, Van Oudenhove L, & Wölnerhanssen BK. (2022). Erythritol and xylitol differentially impact brain networks involved in appetite regulation in healthy volunteers. Nutritional Neuroscience, 25(11), 2344–2358. https://doi.org/10.1080/1028415X.2021.1965787

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Schneider, R., Kraljević, M., Peterli, R., Rohm, T. V., Bosch, A. J. T., Low, A. J. Y., Keller, L., AlAsfoor, S., Häfliger, S., Yilmaz, B., Peterson, C. J., Lazaridis, I. I., Vonäsch, P., Delko, T., & Cavelti-Weder, C. (2022). Roux-en-Y gastric bypass with a long versus a short biliopancreatic limb improves weight loss and glycemic control in obese mice. Surg Obes Relat Dis, 18(11), 1286–1297. https://doi.org/10.1016/j.soard.2022.06.286

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Süsstrunk J, Schneider R, Gebhart M, & Peterli R. (2022). [Bariatric Surgery in 2022 - What Is Important for the General Practitioner?]. Praxis, 111(7), 389–395. https://doi.org/10.1024/1661-8157/a003861

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Wilhelm A, Nocera F, Schneider R, Koechlin L, Daume DL, Fourie L, Steinemann D, von Flüe M, Peterli R, Angehrn FV, & Bolli M. (2022). Robot-assisted vs. laparoscopic repair of complete upside-down stomach hiatal hernia (the RATHER-study): a prospective comparative single center study. Surgical Endoscopy, 36(1), 480–488. https://doi.org/10.1007/s00464-021-08307-2

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Kraljević M, Kraljević M, Schneider R, Wölnerhanssen B, Bueter M, Delko T, & Peterli R. (2021). Different limb lengths in gastric bypass surgery: study protocol for a Swiss multicenter randomized controlled trial (SLIM). Trials, 22(1), 352. https://doi.org/10.1186/s13063-021-05313-6

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Mahawar KK, Omar I, Singhal R, Aggarwal S, Allouch MI, Alsabah SK, Angrisani L, Badiuddin FM, Balibrea JM, Bashir A, Behrens E, Bhatia K, Biertho L, Biter LU, Dargent J, De Luca M, DeMaria E, Elfawal MH, Fried M, et al. (2021). The first modified Delphi consensus statement on sleeve gastrectomy. Surgical Endoscopy, 35(12), 7027–7033. https://doi.org/10.1007/s00464-020-08216-w

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Gero D, Vannijvel M, Okkema S, Deleus E, Lloyd A, Lo Menzo E, Tadros G, Raguz I, San Martin A, Kraljević M, Mantziari S, Frey S, Gensthaler L, Sammalkorpi H, Garcia-Galocha JL, Zapata A, Tatarian T, Wiggins T, Bardisi E, et al. (2021). Defining Global Benchmarks in Elective Secondary Bariatric Surgery Comprising Conversional, Revisional, and Reversal Procedures. Annals of Surgery, 274(5), 821–828. https://doi.org/10.1097/SLA.0000000000005117

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Salminen P, & Peterli R. (2021). Roux-enY gastric bypass limb lengths - How to optimize the balance between weight loss and risk of malnutrition? BJS Open, 5(6). https://doi.org/10.1093/bjsopen/zrab120

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Schneider R, Schulenburg M, Kraljević M, Klasen JM, Peters T, Wölnerhanssen B, & Peterli R. (2021). Does the non-absorbable suture closure of the jejunal mesenteric defect reduce the incidence and severity of internal hernias after laparoscopic Roux-en-Y gastric bypass? Langenbeck’s Archives of Surgery, 406(6), 1831–1838. https://doi.org/10.1007/s00423-021-02180-2

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Kraljević, Marko, Cordasco, Vanessa, Schneider, Romano, Peters, Thomas, Slawik, Marc, Wölnerhanssen, Bettina, & Peterli, Ralph. (2021). Long-term Effects of Laparoscopic Sleeve Gastrectomy: What Are the Results Beyond 10 Years? Obesity Surgery, 31(8), 3427–3433. https://doi.org/10.1007/s11695-021-05437-3

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Kraljević M, Cordasco V, Schneider R, Peters T, Slawik M, Wölnerhanssen B, & Peterli R. (2021). Correction to: Long-Term Effects of Laparoscopic Sleeve Gastrectomy: What Are the Results beyond 10 Years? (Patent No. 8). 31(8), Article 8. https://doi.org/10.1007/s11695-021-05460-4

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Süsstrunk J, Thumshirn M, Peterli R, & Kraljević M. (2021). Early gastrogastric fistula after Roux-en-Y gastric bypass: Successful fistula treatment with self-expandable endoscopic stent. BMJ Case Reports, 14(6). https://doi.org/10.1136/bcr-2021-243748

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Stillhard, Benjamin, Ngo, B. T. Truc, Peterli, Ralph, Peters, Thomas, Schneider, Romano, Kraljević, Marko, Slawik, Marc, & Wölnerhanssen, Bettina. (2021). Preoperative Cardiac Diagnostics in Bariatric Patients with Diabetes and Perioperative Morbidity: Results of a Cohort of 258 Patients. Obesity Surgery, 31(6), 2607–2613. https://doi.org/10.1007/s11695-021-05300-5

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Wölnerhanssen BK, Drewe J, Verbeure W, le Roux CW, Dellatorre-Teixeira L, Rehfeld JF, Holst JJ, Hartmann B, Tack J, Peterli R, Beglinger C, & Meyer-Gerspach AC. (2021). Gastric emptying of solutions containing the natural sweetener erythritol and effects on gut hormone secretion in humans: A pilot dose-ranging study. Diabetes, Obesity and Metabolism, 23(6), 1311–1321. https://doi.org/10.1111/dom.14342

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Peterli R. (2021). Biography: Ralph Peterli, MD (Patent No. 5). 31(5), Article 5. https://doi.org/10.1007/s11695-021-05377-y

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Bühler J, Rast S, Beglinger C, Peterli R, Peters T, Gebhart M, Meyer-Gerspach AC, & Wölnerhanssen BK. (2021). Long-Term Effects of Laparoscopic Sleeve Gastrectomy and Roux-en-Y Gastric Bypass on Body Composition and Bone Mass Density. Obesity Facts, 14(1), 131–140. https://doi.org/10.1159/000512450

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Gero D, Schneider MA, Suter M, Peterli R, Vonlanthen R, Turina M, & Bueter M. (2021). Sleeve gastrectomy or gastric bypass: a “post-code” lottery? A comprehensive national analysis of the utilization of bariatric surgery in Switzerland between 2011–2017. Surgery for Obesity and Related Diseases, 17(3), 563–574. https://doi.org/10.1016/j.soard.2020.10.023

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Taha-Mehlitz S., Bianco G., Coto-Llerena M., Kancherla V., Bantug G.R., Gallon J., Ercan C., Panebianco F., Eppenberger-Castori S., von Strauss M., Staubli S., Bolli M., Peterli R., Matter M.S., Terracciano L.M., von Flue M., Ng C.K.Y., Soysal S.D., Kollmar O., & Piscuoglio S. (2021). Adenylosuccinate lyase is oncogenic in colorectal cancer by causing mitochondrial dysfunction and independent activation of NRF2 and mTOR-MYC-axis. Theranostics, 11(9), 4011–4029. https://doi.org/10.7150/THNO.50051

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Meyer-Gerspach AC, Drewe J, Verbeure W, Roux CWL, Dellatorre-Teixeira L, Rehfeld JF, Holst JJ, Hartmann B, Tack J, Peterli R, Beglinger C, & Wölnerhanssen BK. (2021). Effect of the natural sweetener xylitol on gut hormone secretion and gastric emptying in humans: A pilot dose-ranging study. Nutrients, 13(1), 1–21. https://doi.org/10.3390/nu13010174

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Nussbaumer R, Meyer-Gerspach AC, Peterli R, Peters T, Beglinger C, Chiappetta S, Drewe J, & Wölnerhanssen B. (2020). First-Phase Insulin and Amylin after Bariatric Surgery: A Prospective Randomized Trial on Patients with Insulin Resistance or Diabetes after Gastric Bypass or Sleeve Gastrectomy. Obesity Facts, 13(6), 584–595. https://doi.org/10.1159/000511928

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Lazaridis II, Kraljević M, Schneider R, Klasen JM, Schizas D, Peterli R, Kow L, Delko T, & Collaborators. (2020). The Impact of the COVID-19 Pandemic on Bariatric Surgery: Results from a Worldwide Survey. Obesity Surgery, 30(11), 4428–4436. https://doi.org/10.1007/s11695-020-04830-8

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Schneider R, Kraljević M, Peterli R, Rohm TV, Klasen JM, Cavelti-Weder C, & Delko T. (2020). GLP-1 Analogues as a Complementary Therapy in Patients after Metabolic Surgery: a Systematic Review and Qualitative Synthesis. Obesity Surgery, 30(9), 3561–3569. https://doi.org/10.1007/s11695-020-04750-7

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Linke, Katja, Schneider, Romano, Gebhart, Martina, Ngo, Truc, Slawik, Marc, Peters, Thomas, & Peterli, Ralph. (2020). Outcome of revisional bariatric surgery for insufficient weight loss after laparoscopic Roux-en-Y gastric bypass: an observational study. Surgery for Obesity and Related Diseases, 16(8), 1052–1059. https://doi.org/10.1016/j.soard.2020.04.009

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Bieg C, Mongelli F, Peterli R, Chirindel AF, Metzger J, von Flüe M, & Gass M. (2020). Simplified dual time point FDG-PET/computed tomography for determining dignity of pancreatic lesions. Nuclear Medicine Communications, 41(7), 682–687. https://doi.org/10.1097/MNM.0000000000001191

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Boerboom A, Aarts E, Lange V, Plamper A, Rheinwalt K, Linke K, Peterli R, Berends F, & Hazebroek E. (2020). Banding the Pouch with a Non-adjustable Ring as Revisional Procedure in Patients with Insufficient Results After Roux-en-Y Gastric Bypass: Short-term Outcomes of a Multicenter Cohort Study. Obesity Surgery, 30(3), 797–803. https://doi.org/10.1007/s11695-019-04361-x

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Shimobayashi, Mitsugu, Shetty, Sunil, Frei, Irina C., Wölnerhanssen, Bettina K., Weissenberger, Diana, Dietz, Nikolaus, Thomas, Amandine, Ritz, Danilo, Meyer-Gerspach, Anne Christin, Maier, Timm, Hay, Nissim, Peterli, Ralph, Rohner, Nicolas, & Hall, Michael N. (2020). Diet-induced loss of adipose Hexokinase 2 triggers hyperglycemia. bioRxiv. https://doi.org/10.1101/2019.12.28.887794

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Steffen T, Putora PM, Hübner M, Gloor B, Lehmann K, Kettelhack C, Adamina M, Peterli R, Schmidt J, Ris F, & Glatzer M. (2019). Diagnostic Nodes of Patient Selection for Cytoreductive Surgery and Hyperthermic Intraperitoneal Chemotherapy Among Colorectal Cancer Patients: A Swiss National Multicenter Survey. Clinical Colorectal Cancer, 18(4), e335–e342. https://doi.org/10.1016/j.clcc.2019.06.002

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Gero D, Raptis DA, Vleeschouwers W, van Veldhuisen SL, Martin AS, Xiao Y, Galvao M, Giorgi M, Benois M, Espinoza F, Hollyman M, Lloyd A, Hosa H, Schmidt H, Garcia-Galocha JL, van de Vrande S, Chiappetta S, Menzo EL, Aboud CM, et al. (2019). Defining Global Benchmarks in Bariatric Surgery: A Retrospective Multicenter Analysis of Minimally Invasive Roux-en-Y Gastric Bypass and Sleeve Gastrectomy. Annals of Surgery, 270(5), 859–867. https://doi.org/10.1097/SLA.0000000000003512

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Meyer-Gerspach AC, Peterli R, Moor M, Madörin P, Schötzau A, Nabers D, Borgwardt S, Beglinger C, Bieri O, & Wölnerhanssen BK. (2019). Quantification of Liver, Subcutaneous, and Visceral Adipose Tissues by MRI Before and After Bariatric Surgery. Obesity Surgery, 29(9), 2795–2805. https://doi.org/10.1007/s11695-019-03897-2

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Kraljevic M, & Peterli R. (2019). [Long-Term Results of Sleeve Gastrectomy]. Therapeutische Umschau. Revue Therapeutique, 76(3), 150–153. https://doi.org/10.1024/0040-5930/a001077

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Peterli R, Wölnerhanssen BK, & Bueter M. (2018). Response to: “are Guidelines for Standardized Outcome Reporting in Bariatric Surgery Responsible for Missing the Big Picture in Bariatric Surgery Related Major Complications?” (Patent No. 1). Annals of Surgery, 268(1), Article 1. https://doi.org/10.1097/SLA.0000000000002317

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Schneider R, Lazaridis I, Kraljević M, Beglinger C, Wölnerhanssen B, & Peterli R. (2018). The impact of preoperative investigations on the management of bariatric patients; results of a cohort of more than 1200 cases. Surgery for Obesity and Related Diseases, 14(5), 693–699. https://doi.org/10.1016/j.soard.2018.01.009

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Peterli R, Wölnerhanssen BK, Peters T, Vetter D, Kröll D, Borbély Y, Schultes B, Beglinger C, Drewe J, Schiesser M, Nett P, & Bueter M. (2018). Effect of laparoscopic sleeve gastrectomy vs laparoscopic roux-en-y gastric bypass onweight loss in patients with morbid obesity the sm-boss randomized clinical trial. JAMA - Journal of the American Medical Association, 319(3), 255–265. https://doi.org/10.1001/jama.2017.20897

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Hayoz C, Hermann T, Raptis DA, Brönnimann A, Peterli R, & Zuber M. (2018). Comparison of metabolic outcomes in patients undergoing laparoscopic roux-en-Y gastric bypass versus sleeve gastrectomy - a systematic review and meta-analysis of randomised controlled trials. Swiss Medical Weekly, 148, w14633. https://doi.org/10.4414/smw.2018.14626

Shimobayashi, M., Albert, V., Woelnerhanssen, B., Frei, I. C., Weissenberger, D., Meyer-Gerspach, A. C., Clement, N., Moes, S., Colombi, M., Meier, J. A., Swierczynska, M. M., Jenö, P., Beglinger, C., Peterli, R., & Hall, M. N. (2018). Insulin resistance causes inflammation in adipose tissue. Journal of Clinical Investigation, 128(4), 1538–1550. https://doi.org/10.1172/jci96139

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Wölnerhanssen BK, Moran AW, Burdyga G, Meyer-Gerspach AC, Peterli R, Manz M, Thumshirn M, Daly K, Beglinger C, & Shirazi-Beechey SP. (2017). Deregulation of transcription factors controlling intestinal epithelial cell differentiation; A predisposing factor for reduced enteroendocrine cell number in morbidly obese individuals. Scientific Reports, 7(1), 8174. https://doi.org/10.1038/s41598-017-08487-9

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Vinzens, Fabrizio, Kilchenmann, Ashley, Zumstein, Valentin, Slawik, Marc, Gebhart, Martina, & Peterli, Ralph. (2017). Long-term outcome of laparoscopic adjustable gastric banding (LAGB): results of a Swiss single-center study of 405 patients with up to 18 years’ follow-up. Surgery for Obesity and Related Diseases, 13(8), 1313–1319. https://doi.org/10.1016/j.soard.2017.04.030

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Peterli R, Wölnerhanssen BK, Vetter D, Nett P, Gass M, Borbély Y, Peters T, Schiesser M, Schultes B, Beglinger C, Drewe J, & Bueter M. (2017). Laparoscopic sleeve gastrectomy versus Roux-Y-Gastric bypass for morbid obesity - 3-year outcomes of the prospective randomized Swiss Multicenter Bypass Or Sleeve Study (SM-BOSS). Annals of Surgery, 265(3), 466–473. https://doi.org/10.1097/SLA.0000000000001929

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Däster S, Soysal SD, Koechlin L, Stoll L, Peterli R, von Flüe M, & Ackermann C. (2016). Perioperative outcomes of esophageal cancer surgery in a mid-volume institution in the era of centralization. Langenbeck’s Archives of Surgery, 401(6), 787–795. https://doi.org/10.1007/s00423-016-1477-1

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Wölnerhanssen BK, Meyer-Gerspach AC, Peters T, Beglinger C, & Peterli R. (2016). Incretin effects, gastric emptying and insulin responses to low oral glucose loads in patients after gastric bypass and lean and obese controls. Surgery for Obesity and Related Diseases, 12(7), 1320–1327. https://doi.org/10.1016/j.soard.2015.11.022

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Wölnerhanssen BK, Cajacob L, Keller N, Doody A, Rehfeld JF, Drewe J, Peterli R, Beglinger C, & Meyer-Gerspach AC. (2016). Gut hormone secretion, gastric emptying, and glycemic responses to erythritol and xylitol in lean and obese subjects. American Journal of Physiology - Endocrinology and Metabolism, 310(11), E1053–E1061. https://doi.org/10.1152/ajpendo.00037.2016

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Schneider, Romano, Gass, Jörn-Markus, Kern, Beatrice, Peters, Thomas, Slawik, Marc, Gebhart, Martina, & Peterli, Ralph. (2016). Linear compared to circular stapler anastomosis in laparoscopic Roux-en-Y gastric bypass leads to comparable weight loss with fewer complications: a matched pair study. Langenbeck’s Archives of Surgery, 401(3), 307–313. https://doi.org/10.1007/s00423-016-1397-0

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Schneider, Julia, Peterli, Ralph, Gass, Markus, Slawik, Marc, Peters, Thomas, & Wölnerhanssen, Bettina K. (2016). Laparoscopic sleeve gastrectomy and Roux-en-Y gastric bypass lead to equal changes in body composition and energy metabolism 17 months postoperatively: A prospective randomized trial. Surgery for Obesity and Related Diseases, 12(3), 563–570. https://doi.org/10.1016/j.soard.2015.07.002

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Wölnerhanssen B, & Peterli R. (2015). [Management of complications after bariatric surgery]. Der Chirurg; Zeitschrift fur alle Gebiete der operativen Medizen, 86(12), 1114–1120. https://doi.org/10.1007/s00104-015-0098-5

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Lindinger PW, Christe M, Eberle AN, Kern B, Peterli R, Peters T, Jayawardene KJ, Fearnley IM, & Walker JE. (2015). Important mitochondrial proteins in human omental adipose tissue show reduced expression in obesity. Data in Brief, 4, 40–43. https://doi.org/10.1016/j.dib.2015.04.007

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Lindinger PW, Christe M, Eberle AN, Kern B, Peterli R, Peters T, Jayawardene KJ, Fearnley IM, & Walker JE. (2015). Important mitochondrial proteins in human omental adipose tissue show reduced expression in obesity. Journal of Proteomics, 124, 79–87. https://doi.org/10.1016/j.jprot.2015.03.037

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Yu YH, Vasselli JR, Zhang Y, Mechanick JI, Korner J, & Peterli R. (2015). Metabolic vs. hedonic obesity: A conceptual distinction and its clinical implications. Obesity Reviews, 16(3), 234–247. https://doi.org/10.1111/obr.12246

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Wölnerhanssen, Bettina Karin, Meyer-Gerspach, Anne Christin, Schmidt, André, Zimak, Nina, Peterli, Ralph, Beglinger, Christoph, & Borgwardt, Stefan. (2015). Dissociable Behavioral, Physiological and Neural Effects of Acute Glucose and Fructose Ingestion: A Pilot Study. PLoS ONE, 10(6), e0130280. https://doi.org/10.1371/journal.pone.0130280

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Däster S, Soysal SD, Stoll L, Peterli R, von Flüe M, & Ackermann C. (2014). Long-term quality of life after ivor lewis esophagectomy for esophageal cancer. World Journal of Surgery, 38(9), 2345–2351. https://doi.org/10.1007/s00268-014-2576-1

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Sieber, Patricia, Gass, Markus, Kern, Beatrice, Peters, Thomas, Slawik, Marc, & Peterli, Ralph. (2014). Five-year results of laparoscopic sleeve gastrectomy. Surgery for Obesity and Related Diseases, 10(2), 243–249. https://doi.org/10.1016/j.soard.2013.06.024

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Wölnerhanssen B, & Peterli R. (2014). State of the art: Sleeve gastrectomy. Digestive Surgery, 31(1), 40–47. https://doi.org/10.1159/000354320

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Peterli R, Borbély Y, Kern B, Gass M, Peters T, Thurnheer M, Schultes B, Laederach K, Bueter M, & Schiesser M. (2013). Early results of the swiss multicentre bypass or sleeve study (SM-BOSS): A prospective randomized trial comparing laparoscopic sleeve gastrectomy and Roux-en-Y gastric bypass. Annals of Surgery, 258(5), 690–695. https://doi.org/10.1097/SLA.0b013e3182a67426

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Christe M, Hirzel E, Lindinger A, Kern B, von Flüe M, Peterli R, Peters T, Eberle AN, & Lindinger PW. (2013). Obesity affects mitochondrial citrate synthase in human omental adipose tissue. ISRN Obesity, 2013, 826027. https://doi.org/10.1155/2013/826027

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Gass M, Zynamon A, von Flüe M, & Peterli R. (2013). Drain-site hernia containing the vermiform appendix: report of a case. Case reports in surgery, 2013, 198783. https://doi.org/10.1155/2013/198783

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Steinert, Robert E, Peterli, Ralph, Keller, Sylvia, Meyer-Gerspach, Anne C, Drewe, Jürgen, Peters, Thomas, & Beglinger, Christoph. (2013). Bile acids and gut peptide secretion after bariatric surgery : a 1-year prospective randomized pilot trial. Obesity, 21(12), E660–8. https://doi.org/10.1002/oby.20522

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Timper, Katharina, Grisouard, Jean, Sauter, Nadine S., Herzog-Radimerski, Tanja, Dembinski, Kaethi, Peterli, Ralph, Frey, Daniel M., Zulewski, Henryk, Keller, Ulrich, Muller, Beat, & Christ-Crain, Mirjam. (2013). Glucose-dependent insulinotropic polypeptide induces cytokine expression, lipolysis, and insulin resistance in human adipocytes. American Journal of Physiology. Regulatory, Integrative and Comparative Physiology, 304(1), E1–13. https://doi.org/10.1152/ajpendo.00100.2012

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Toelle P, Peterli R, Zobel I, Noppen C, Christoffel-Courtin C, & Peters T. (2012). Risk factors for secondary hyperparathyroidism after bariatric surgery: A comparison of 4 different operations and of vitamin D-receptor-polymorphism. Experimental and Clinical Endocrinology and Diabetes, 120(10), 629–634. https://doi.org/10.1055/s-0032-1321811

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Ekelund M, Oberg S, Peterli R, Frederiksen SG, & Hedenbro JL. (2012). Gastroesophageal reflux after vertical banded gastroplasty is alleviated by conversion to gastric bypass. Obesity Surgery, 22(6), 851–854. https://doi.org/10.1007/s11695-011-0540-9

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Däster S, Borbély Y, & Peterli R. (2012). Acute pancreatitis after Roux-en-Y gastric bypass surgery due to reflux into biliopancreatic limb. Surgery for Obesity and Related Diseases, 8(3), e37–9. https://doi.org/10.1016/j.soard.2011.02.007

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Grisouard, Jean, Bouillet, Elisa, Timper, Katharina, Radimerski, Tanja, Dembinski, Kaethi, Frey, Daniel M., Peterli, Ralph, Zulewski, Henryk, Keller, Ulrich, Muller, Beat, & Christ-Crain, Mirjam. (2012). Both inflammatory and classical lipolytic pathways are involved in lipopolysaccharide-induced lipolysis in human adipocytes. Innate Immunity, 18(1), 25–34. https://doi.org/10.1177/1753425910386632

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Peterli, Ralph, Steinert, Robert E, Woelnerhanssen, Bettina, Peters, Thomas, Christoffel-Courtin, Caroline, Gass, Markus, Kern, Beatrice, von Fluee, Markus, & Beglinger, Christoph. (2012). Metabolic and hormonal changes after laparoscopic Roux-en-Y gastric bypass and sleeve gastrectomy: a randomized, prospective trial. Obesity Surgery, 22(5), 740–748. https://doi.org/10.1007/s11695-012-0622-3

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Businger, Adrian, Grunder, Gabriela, Guenin, Marc-Olivier, Ackermann, Christoph, Peterli, Ralph, & von Flüe, Markus. (2011). Mechanical bowel preparation and antimicrobial prophylaxis in elective colorectal surgery in Switzerland--a survey. Langenbeck’s Archives of Surgery, 396(1), 107–113. https://doi.org/10.1007/s00423-010-0718-y

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Gass, M, Beglinger, C, & Peterli, R. (2011). Metabolic surgery-principles and current concepts. Langenbeck’s Archives of Surgery, 396(7), 949–972. https://doi.org/10.1007/s00423-011-0834-3

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Grisouard, Jean, Timper, Katharina, Bouillet, Elisa, Radimerski, Tanja, Dembinski, Kaethi, Frey, Daniel M., Peterli, Ralph, Zulewski, Henryk, Keller, Ulrich, Müller, Beat, & Christ-Crain, Mirjam. (2011). Metformin counters both lipolytic/inflammatory agents-decreased hormone sensitive lipase phosphorylation at Ser-554 and -induced lipolysis in human adipocytes. Archives of Physiology and Biochemistry, 117(4), 209–214. https://doi.org/10.3109/13813455.2010.550925

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Timper, K., Grisouard, J., Radimerski, T., Dembinski, K., Peterli, R., Häring, A., Frey, D. M., Zulewski, H., Keller, U., Müller, B., & Christ-Crain, M. (2011). Glucose-Dependent Insulinotropic Polypeptide (GIP) Induces Calcitonin Gene-Related Peptide (CGRP)-I and Procalcitonin (Pro-CT) Production in Human Adipocytes [Journal-article]. Molecular Endocrinology, 25(1), 195–196. https://doi.org/10.1210/mend.25.1.9998

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Timper, Katharina, Grisouard, Jean, Radimerski, Tanja, Dembinski, Kaethi, Peterli, Ralph, Häring, Andreas, Frey, Daniel M., Zulewski, Henryk, Keller, Ulrich, Müller, Beat, & Christ-Crain, Mirjam. (2011). Glucose-Dependent Insulinotropic Polypeptide (GIP) Induces Calcitonin Gene-Related Peptide (CGRP)-I and Procalcitonin (Pro-CT) Production in Human Adipocytes. Journal of Clinical Endocrinology and Metabolism, 96(2), E297–303. https://doi.org/10.1210/jc.2010-1324

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Woelnerhanssen, Bettina, Peterli, Ralph, Steinert, Robert E, Peters, Thomas, Borbély, Yves, & Beglinger, Christoph. (2011). Effects of postbariatric surgery weight loss on adipokines and metabolic parameters: comparison of laparoscopic Roux-en-Y gastric bypass and laparoscopic sleeve gastrectomy - a prospective randomized trial. Surgery for Obesity and Related Diseases, 7(5), 561–568. https://doi.org/10.1016/j.soard.2011.01.044

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