1. Digestive Disease Unit; Campus Bio Medico University; Rome Italy
2. Gastroenterology Unit; University of Genoa; Genova Italy
3. Section of Internal Medicine; Department of Medicine and Aging Sciences and Center for Excellence on Ageing (Ce.S.I.Met); “G. D'Annunzio” University and Foundation; Chieti Italy
4. Gastroenterology and Endoscopy Unit; Fondazione IRCCS Ca’ Granda Ospedale Maggiore Policlinico - University of Milan; Milan Italy