1. Department of Surgery, Amsterdam UMC, University of Amsterdam, Amsterdam Gastroenterology Endocrinology Metabolism, Amsterdam, The Netherlands
2. Department of Gastroenterology & Hepatology, Amsterdam UMC, University of Amsterdam, Amsterdam Gastroenterology Endocrinology Metabolism, Amsterdam, The Netherlands
3. Department of Gastroenterology & Hepatology, Leiden University Medical Centre, The Netherlands
4. Department of Radiology, Amsterdam UMC, University of Amsterdam, Amsterdam Gastroenterology Endocrinology Metabolism, Amsterdam, The Netherlands
5. Department of Surgery, St. Antonius Hospital, The Netherlands
6. Department of Surgery, University Medical Centre Utrecht, The Netherlands