Affiliation: | 1. Gastroenterology Unit, Department of Surgery, Oncology and Gastroenterology, University of Padua, Padua, Italy;3. Gastroenterology Unit, Department of Internal Medicine and Medical Specialties, University of Genoa, Genoa, Italy;4. Surgery Unit, Department of Surgery, University of Campania Luigi Vanvitelli, Caserta, Italy;6. Gastrointestinal Unit, Department of Translational Research and New Technologies in Medicine and Surgery, University of Pisa, Pisa, Italy;5. Pathophysiology Unit, Baggiovara Hospital, Modena, Italy;7. Gastroenterology and Endoscopy Unit, Fondazione IRCCS Cà Granda, Ospedale Maggiore Policlinico, Milan, Italy;12. Department of Pathophysiology and Transplantation, Università degli Studi di Milano, Milan, Italy;8. Division of Gastroenterology, Washington University School of Medicine in St Louis, St Louis, Missouri |