1. Department of Systems Medicine, University Tor Vergata of Rome, Rome, Italy
2. Gastrointestinal Unit, ASST-Fatebenefratelli Sacco. L. Sacco Department of Biochemical and Clinical Sciences, University of Milan, Italy
3. Dipartimento Scienze Mediche e Chirurgiche, Fondazione Policlinico Universitario A. Gemelli IRCCS - Università Cattolica, Rome, Italy
4. Gastroenterology Unit, “Federico II” University of Naples, Naples, Italy
5. Gastroenterology Unit, Azienda-University of Padua, Padova, Italy
6. IBD Center, Department of Gastroenterology, Humanitas Clinical and Research Center - IRCCS and Department of Biomedical Sciences, Humanitas University, Milan, Italy
7. Gastroenterology Unit, Mauriziano Hospital, Turin, Italy
8. IBD Unit, DIMEC, University of Bologna, S Orsola-Malpighi Hospital, Bologna, Italy
9. Gastroenterology Operative Unit, Azienda Ospedaliera San Camillo-Forlanini, Rome, Italy
10. Department of Biomedical Sciences for Health, University of Milan, Fondazione IRCCS Ca’ Granda Ospedale Maggiore Policlinico, Milan, Italy
11. IBD UNIT AO, “Villa Sofia-Cervello” Hospital, Palermo, Italy