[1] Univ Milano Bicocca, Div Gastroenterol, Monza, Italy
[2] Univ Milano Bicocca, Ctr Autoimmune Liver Dis, Dept Med & Surg, Monza, Italy
[3] San Gerardo Hosp, European Reference Network Hepatol Dis ERN RARE L, Monza, Italy
[4] Osped Niguarda Ca Granda, Diagnost & Intervent Digest Endoscopy Milano, Lombardia, Italy
[5] Univ Milan, Dept Pathophysiol & Transplantat, Milan, Italy
[6] A Manzoni Hosp, Div Endoscopy, ASST Lecco, Lecce, Italy
[7] Maggiore Hosp, Dept Gastroenterol & Endoscopy, ASST Crema, Crema, Italy
[8] ASST Cremona, Digest Endoscopy & Gastroenterol Unit, Cremona, Italy
[9] ASST Bergamo Ovest, Gastroenterol & Endoscopy Unit, Bergamo, Italy
[10] San Gerardo Hosp, Endoscopy Unit, ASST Monza, Monza, Italy
[11] San Gerardo Hosp, ASST Monza, Div Pathol, Monza, Italy
[12] ASST Cremona, Div Pathol, Cremona, Italy
[13] Fdn IRCCS Ca Granda Osped Maggiore Policlin, Gastroenterol & Endoscopy Unit, Milan, Italy