1. Department of Gastroenterology and Digestive Oncology, Cochin Hospital, Assistance Publique - Hôpitaux de Paris, Paris, France
2. Department of Gastroenterology and Hepatology, Bürgerspital Solothurn, Solothurn, Switzerland
3. Faculty of Medicine, Berne University, Berne, Switzerland
4. Department of Digestive Surgery, Cochin Hospital, Assistance Publique - Hôpitaux de Paris, Paris, France
5. Department of Abdominal and Interventional Imaging, Cochin Hospital, Assistance Publique - Hôpitaux de Paris, Paris, France
6. Faculty of Medicine, Université de Paris Cité, Paris, France