1. Territorial Gastroenterology Service, Asl Bat, Andria, Italy
2. Department of Medical and Surgical Sciences, Catholic University, Rome, Italy
3. Gastroenterology Unit, Azienda Ospedale-Università di Padova (AOUP), Padua, Italy
4. Division of Gastroenterology, IBD Unit, “S. Pertini” Hospital, Rome, Italy
5. CEMAD (Digestive Disease Center), Department of Medical and Surgical Sciences, Policlinico Universitario “A. Gemelli” IRCCS Foundation, Rome, Italy
6. School of Medicine, Catholic University, Rome, Italy
7. IBD Unit, Department of General Surgery and Gastroenterology, Pisa University Hospital, Pisa, Italy
8. Division of Gastroenterology, “Veris-Delli Ponti” Hospital, Scorrano (LE), Italy
9. Division of Gastroenterology, “San Salvatore” Hospital, Pesaro, Italy
10. Division of Digestive Diseases, Digestive Endoscopy and Inflammatory Bowel Diseases, Ancona, Italy
11. Division of Gastroenterology, “L. Sacco” University Hospital, Milan, Italy
12. Division of Gastroenterology, IBD Unit, “A. Murri” Hospital, Fermo, Italy
13. Department of Internal Medicine and Medical Specialties, Division of Gastroenterology, IRCCS “San Martino” Hospital, University of Genoa, Genoa, Italy
14. Digestive Endoscopy Unit, Santorso, VI, Italy
15. Ambulatory for IBD Treatment, “Valle D’Itria” Hospital, Martina Franca (TA), Italy
16. Division of Gastroenterology, ”S. Camillo-Forlanini” Hospital, Rome, Italy
17. Division of Gastroenterology, “Ciaccio-Pugliese” Hospital, Catanzaro, Italy
18. Gastroenterology Unit, “Spirito Santo” Hospital, “G d’Annunzio” University, Pescara, Italy
19. Gastroenterology and Endoscopy Unit, Department of Medicine and Surgery, University of Parma, Parma, Italy
20. Division of Gastroenterology, “Nuovo Regina Margherita” Territorial Hospital, Rome, Italy
21. Division of Gastroenterology, “Santa Caterina Novella” Hospital, Galatina (LE), Italy
22. Division of Gastroenterology, A.O. “Ospedali Riuniti”, Foggia, Italy
23. Division of Digestive Endoscopy, “S. Maria Goretti” Hospital, Latina, Italy
24. Digestive Endoscopy Unit, “San Matteo Degli Infermi” Hospital, Spoleto (PG), Italy
25. Division of Gastroenterology, “A. Perrino” Hospital, Brindisi, Italy
26. Division of Gastroenterology, “Belcolle” Hospital, Viterbo, Italy
27. Division of Gastroenterology, “S. Giovanni - Addolorata” Hospital, Rome, Italy
28. Division of Gastroenterology, “Brotzu” Hospital, Cagliari, Italy
29. Division of General Surgery, “P. Colombo” Hospital, ASL Roma 6, Velletri (Roma), Italy