1. Divisione di Endoscopia, Istituto Europeo di Oncologia IRCCS Milan Italy
2. U.O. Endoscopia Digestiva, Fondazione Poliambulanza – Istituto Ospedaliero Brescia Italy
3. Department of Pathophysiology and Organ Transplantation University of Milan Milan Italy
4. Gastroenterology and Endoscopy Unit IRCCS Fondazione Ca' Granda Ospedale Maggiore Policlinico Milan Italy
5. Department of Molecular and Transactional Medicine, Statistics and Biomathematics Unit, Faculty of Medicine and Surgery University of Brescia Brescia Italy
6. U.O.C. Gastroenterologia, ASST Rhodense Presidi di Rho e Garbagnate Garbagnate Milanese (MI) Italy
7. Medical Affairs, NTC Milan Italy
8. Servizio Gastroenterologia ed Endoscopia Digestiva Istituto Auxologico Italiano Milan Italy
9. Ospedale Papa Giovanni XXIII Bergamo Italy