1. Digestive Pathophysiology Unit and Digestive Endoscopy Unit Baggiovara Hospital Modena Italy
2. Gastroenterology Unit Department of Medical and Surgical Sciences University of Bologna Bologna Italy
3. Department of Digestive Diseases Campus Bio Medico University of Rome Roma Italy
4. Department of Translational Research and New Technology in Medicine and Surgery University of Pisa Pisa Italy
5. General and Bariatric Surgery Unit Department of Surgery 2nd University of Naples Napoli Italy
6. Department of Pathophysiology and Transplantation University of Milan Milano Italy
7. Fondazione IRCCS Ca' GrandaOspedale Maggiore Policlinico Milano Italy
8. Gastroenterology Unit Department of Surgery, Oncology and Gastroenterology University of Padua Padova Italy