1 Division of Gastroenterology, Centre for Autoimmune Liver Diseases, Department of Medicine and Surgery, University of Milano-Bicocca, Monza, Italy; European Reference Network on Hepatological Diseases (ERN RARE-LIVER), San Gerardo Hospital, Monza, Italy. Electronic address: marco.carbone@unimib.it.
2 Department of Medico-Surgical Sciences and Biotechnologies, Sapienza University of Rome, Rome, Italy; Division of Gastroenterology, Policlinico Umberto I, Rome, Italy.