[1] Univ Padua, Dept Surg Oncol & Gastroenterol, Gastroenterol Sect, Padua, Italy
[2] Univ Padua, Dept Surg Oncol & Gastroenterol, Hepatobiliary Surg & Liver Transplant Unit, Padua, Italy
[3] Bolognini Hosp, Div Med, Milan, Italy
[4] Treviglio Caravaggio Hosp, Div Med, Bergamo, Italy
[5] Univ Padua, Dept Clin & Expt Med, Padua, Italy
[6] Univ Cattolica Sacro Cuore, Internal Med & Gastroenterol Unit, Rome, Italy
[7] Alma Mater Studiorum Univ Bologna, Dept Clin Med, Bologna, Italy
[8] Fatebenefratelli Hosp, Dept Med, Internal Med & Hepatol Unit, Milan, Italy
[9] Univ Genoa, Dept Internal Med, Gastroenterol Unit, I-16126 Genoa, Italy
[10] Belcolle Hosp, Gastroenterol Unit, Viterbo, Italy