Bariatric Surgery Section Visitors

Professor Torsten Olbers

Gothenburg, Sweden

Torsten Olbers is a professor of surgery and consultant bariatric surgeon at University of Linkoping in Sweden. His focus is minimal invasive upper GI surgery with a specific focus on bariatric surgery. His national and international reputation stems from combining a busy clinical activity with continuous academic productivity. He has conducted several randomized controlled trials within bariatric surgery and is currently leading the Swedish Nationwide BEST (Bypass Equipoise Sleeve Trial) project (n=2100). He is the principal investigator for the Swedish research program for adolescents undergoing bariatric surgery- AMOS, and Professor Olbers is also one of the authors and main surgical contributors to the Swedish Obese Subject (SOS) study. Professor Olbers has performed several thousand laparoscopic baratric surgical procedures (gastric bypass, sleeve gastrectomy and lap BPD/Duodenal switch, revisional bariatric surgery) and described and refined the double loop technique for performing laparoscopic gastric bypass together with Hans Lonroth, which is currently the dominating bariatric technique in the Scandinavian countries and many other places worldwide. As a regularly invited lecturer at international conferences, he has contributed to development of bariatric surgery worldwide.

Associate Professor Amir Ghaferi

Ann Arbor, USA

Dr Ghaferi is an Associate Professor of Surgery and Business at the University of Michigan. He is currently the Surgeon-in-Chief of the
University Hospital Operating Rooms and Founding Director of the Bariatric Surgery Program at the Ann Arbor VA Healthcare System. He is also the Director of the Michigan Bariatric Surgery Collaborative, a consortium of 40 hospitals and 80 surgeons focused on improving the safety and quality of bariatric surgery. He received his Bachelors degree from UCLA, his medical degree from the Johns Hopkins University School of Medicine, and completed his surgical training at the University of Michigan. Dr Ghaferi also completed advanced training in health services research and obtained a Masters degree in Health and Healthcare Research from the University of Michigan. Dr Ghaferi’s research focuses on understanding the relationship of organizational systems and design to quality and efficiency, with the ultimate goal of designing interventions to improve care locally, regionally, and nationally. Dr Ghaferi receives research funding from the Agency for Healthcare Research and Quality (AHRQ), the National Institutes of Health (NIH), and the Patient Centered Outcomes Research Institute (PCORI). His research has been published in prominent journals such as The New England Journal of Medicine, JAMA, Medical Care, and Annals of Surgery. Dr Ghaferi is an active member of several national societies (Association for Academic Surgery, Society of University Surgeons, AcademyHealth) and serves on, chairs, or co-chairs several national committees. He is currently the President of the Surgical Outcomes Club – the largest surgical health services research group in the world. He is also the Secretary of the Association for Academic Surgery – the largest academic surgical association in the US. Dr Ghaferi is passionate about inspiring and developing academic surgeons across the US and beyond. As such, since 2015 he has been the co-convener of the Royal Australasian College of Surgeons Developing a Career in Academic Surgery annual course (In association with the Section of Academic Surgery).

Associate Professor Evan Nadler

Washington, USA

Evan P. Nadler MD serves as Co-Director of the Children’s National Obesity Institute, and is the Director of the Child and Adolescent Weight Loss Surgery Program at Children’s National Health System. He is also a tenured Associate Professor of Surgery, and Pediatrics, at The George Washington University School of Medicine & Health Sciences. Before moving to Washington DC, he was the Director of Minimally Invasive Pediatric Surgery at the New York University School of Medicine where he participated in US Food and Drug Administration-approved studies using laparoscopic adjustable gastric banding in adolescents with obesity.  He was recently part of a National Institutes of Health funded study investigating the effect of surgical weight loss on executive functioning and cognition in adolescents. His other current research pursuits include obesity device development, bariatric surgery for monogenic forms of obesity, and adipocyte signaling via exosomes. Dr Nadler is an international leader in the field of adolescent obesity, has multiple publications on the topic, and was one of the founding members of the Childhood Obesity Committee of the American Pediatric Surgery Association.

Dr Nadler graduated from Stanford University in 1991 with a bachelor’s degree in Biology. He earned his medical degree from the University of Pennsylvania in 1995 and completed his surgical residency at Cornell University Medical Center in 2002. During his surgical residency, Dr Nadler spent two years studying mucosal immunology of the intestine as a research fellow at the Children’s Hospital of Pittsburgh. He returned to the Children’s Hospital of Pittsburgh after completing his surgical residency to serve as the clinical fellow in pediatric surgery, finishing in 2004.  He was then recruited to join the faculty at the New York University School of Medicine where he continued until the summer of 2009, after which he joined Children’s National Medical Center.