1. Gastroenterology and Endoscopy UnitFondazione IRCCS Ca’ Granda Ospedale Maggiore PoliclinicoItaly
2. Department of Pathophysiology and TransplantationUniversità degli Studi di MilanoItaly
3. Center for Prevention and Diagnosis of Celiac DiseaseFondazione IRCCS Ca’ Granda Ospedale Maggiore PoliclinicoItaly