1. Department of Gastroenterology and Hepatology, Centre Médico-chirurgical Magellan, Hôpital Haut-Lévêque, CHU de Bordeaux, Université de Bordeaux, INSERM CIC 1401, Bordeaux , France
2. Department of Abdominal Surgery, University Hospitals Leuven, KU Leuven , Leuven , Belgium
3. Department of Gastroenteology, Hôpital Saint-Louis, APHP, INSERM U1160, Université Paris Cité , Paris , France
4. Department of Gastroenterology and Hepatology, University Hospitals Leuven , Leuven , Belgium
5. Translational Research in Gastrointestinal Disorders (TARGID), Department of Chronic Diseases and Metabolism (CHROMETA), KU Leuven , Leuven , Belgium
6. Department of Surgery, Sheffield Teaching Hospitals , Sheffield , UK
7. Department of Colorectal Surgery, University Hospitals of Birmingham NHS Trust , Birmingham , UK
8. Department of Surgery, Amsterdam University Medical Centers , location Meibergdreef, Amsterdam , the Netherlands
9. Department of Advanced Medical and Surgical Science, Università Degli Studi Della Campania Luigi Vanvitelli , Naples , Italy
10. IBD Outpatient Clinics, Colorectal Surgery Unit, Pontifícia Universidade Católica do Paraná (PUCPR) , Curitiba , Brazil
11. Paris IBD Center, Groupe Hospitalier Privé Ambroise Paré-Hartmann , Neuilly/Seine , France