[1] Univ Messina, Dept Clin & Expt Med, Messina, Italy
[2] San Camillo Forlanini, UOC Gasteroenterol, Rome, Italy
[3] Univ Naples Federico II, Gastroenterol, Naples, Italy
[4] Univ Bari, Gastroenterol Sect DETO, Bari, Italy
[5] Dept Med, Gastroenterol, Padua, Italy
[6] Catholic Univ, IBD UNIT, Rome, Italy
[7] Osped San Giuseppe, UOC Gastroenterol, Empoli, FI, Italy
[8] AO Fatebenefratelli & Oftalm, UOC Med Interna & Epatol, Milan, Italy
[9] ACO San Filippo Neri, UOC Gastroenterol & Epatol, Rome, Italy
[10] Fdn IRCCS Ca Grande Osped Policlin Milan, UO Gastroenterol, Milan, Italy
[11] AOC Gastroenterol Epatol, UOC Gastroenterol & Epatol, Palermo, Italy
[12] Careggi Univ Hosp, Gastroenterol Unit, Florence, Italy
[13] Osped Brodzu, UOC Gastroenterol, Cagliari, Italy
[14] Univ Catania, Dip Sci Med & Pediat, Catania, Italy
[15] IBD UNIT, AO Emergenza Cannizzaro, Catania, Italy
[16] Fdn IRCCS Ca Grande Osped Policlin Milano, Dipartimento Fisiopatol Medicochirurg & Trapianti, Milan, Italy
[17] AOU Policlin Federico II Naples, Gastroenterol, Naples, Italy
[18] OC Padova, Dip Med, Gastroenterol, Padua, Italy
[19] AORN A Cardarelli, Naples, Italy
[20] UOC Gastroenterol, Naples, Italy