1. Gastroenterology and Endoscopy, IRCCS Ospedale San Raffaele and Vita-Salute San Raffaele University, Milan, Italy
2. IBD Unit, Department of Gastroenterology and Digestive Endoscopy, San Camillo-Forlanini Hospital, Rome, Italy
3. Department of Gastroenterology, University of Lorraine, CHRU-Nancy, Nancy, France
4. Department of Gastroenterology, Nancy University Hospital, Vandœuvre-lès-Nancy, France
5. INSERM, NGERE, University of Lorraine, Nancy, France
6. INFINY Institute, Nancy University Hospital, Vandœuvre-lès-Nancy, France
7. Department of Gastroenterology, FHU-CURE, Nancy University Hospital, Vandœuvre-lès-Nancy, France