1 Gastroenterology and Endoscopy Unit, IRCCS Humanitas Research Hospital, Via Manzoni 56, Rozzano, 20089, Milan, Italy. robertaelisa.rossi@gmail.com.
2 Division of Gastroenterology and Center for Autoimmune Liver Diseases, European Reference Network On Hepatological Diseases (ERN RARE-LIVER), Fondazione IRCCS San Gerardo dei Tintori, Monza, Italy.