1. Department of Gastroenterology and Endoscopy, IRCCS San Raffaele Hospital, Vita-Salute San Raffaele University, 20132 Milan, Italy
2. Department of Biomedical Sciences, Humanitas University, 20089 Milan, Italy
3. Department of Gastroenterology, IRCCS Policlinico San Matteo, University of Pavia, 27100 Pavia, Italy
4. Department of Gastroenterology, Nancy University Hospital, F-54500 Vandœuvre-lès-Nancy, France
5. Inserm, NGERE, University of Lorraine, F-54000 Nancy, France
6. INFINY Institute, Nancy University Hospital, F-54500 Vandœuvre-lès-Nancy, France
7. FHU-CURE, Nancy University Hospital, F-54500 Vandœuvre-lès-Nancy, France
8. Groupe Hospitalier Privé Ambroise Paré-Hartmann, Paris IBD Center, F-92200 Neuilly-sur-Seine, France
9. Division of Gastroenterology and Hepatology, McGill University Health Centre, Montreal, QC H4A 3J1, Canada
10. IBD Unit, Department of Gastroenterology and Digestive Endoscopy, San Camillo-Forlanini Hospital, 00152 Rome, Italy