[1] Osped S Filippo Neri, UOS Malattie Infiammatorie Cron Intestinali, Rome, Italy
[2] AO San Camillo Forlanini, UOC Gastroenterol & Endoscopia Digest Diagnost &, Rome, Italy
[3] Univ Cattolica, Presidio Columbus Fdn Policlin Univ A Gemelli IRC, IBD Unit, Rome, Italy
[4] ASST Rhodense, Osped Rho, O Gastroenterol, Milan, Italy
[5] Azienda Policlin Univ Bari, Sez Gastroenterol, Bari, Italy
[6] Univ Turin, Dept Surg Sci, Turin, Italy
[7] Humanitas Univ, Humanitas Clin & Res Ctr, IBD Ctr, Milan, Italy
[8] Humanitas Univ, Dept Biomed Sci, Milan, Italy
[9] Osped Brotzu, SC Gastroenterol, Cagliari, Italy
[10] Univ Genoa, Policlin San Martino, Dept Internal Med, Genoa, Italy
[11] AOU Mater Domini Catanzaro, UOC Gastroenterol, Catanzaro, Italy
[12] Sapienza Univ Roma, Dipartimento Med Interna & Specialita Med, Div Gastroenterol, Rome, Italy
[13] Osped San Nicola Pellegrino, UOC Gastroenterol, Trani, Italy
[14] Univ Pisa, Dept New Technol & Translat Res Med & Surg, Pisa, Italy
[15] Univ Padua, Dipartimento Sci Chirurg Oncol & Gastroenterol, Padua, Italy
[16] Statistician Italian Grp Study Inflammatory Bowel, Florence, Italy