1. Gastroenterology Unit, Department of Surgery, Oncology and Gastroenterology, University Hospital of Padova, 35128 Padova, Italy
2. Gastroenterology Unit, Department of Gastrointestinal Oncological Surgery, S. Maria del Prato Hospital, 32032 Feltre, Italy
3. Gastroenterology Unit, Department of Translational Research and New Technologies in Medicine and Surgery, University of Pisa, 56126 Pisa, Italy
4. Surgical Pathology Unit, Department of Medicine, University of Padova, 35138 Padova, Italy
5. General Surgery Unit, Department of Surgery, Oncology and Gastroenterology, University of Padova, 35138 Padova, Italy
6. IBD Center, Gastroenterology Unit, Rho Hospital, ASST Rhodense, 20017 Rho, Italy
7. Gastroenterology Unit, ASST Bergamo Est, 24068 Seriate, Italy
8. Department of Medical Sciences, Division of Gastroenterology, University of Turin, 10126 Turin, Italy