1 Division of Gastroenterology and Hepatology, Fondazione IRCCS Ca' Granda Maggiore Hospital Policlinico and University of Milan, Italy. Electronic address: francesca.donato@policlinico.mi.it.
2 Division of Internal Medicine, Maggiore Hospital and University Carità Maggiore della Carità, Italy.
3 Division of Gastroenterology and Hepatology, Fondazione IRCCS Ca' Granda Maggiore Hospital Policlinico and University of Milan, Italy.
4 Division of Hepatology and Gastroenterology, Epatologia, ASST Grande Metropolitan Hospital Niguarda, Italy.
5 Humanitas University, Department of Biomedical Sciences, Italy.
6 Division of Gastroenterology, Policlinico Hospital San Marco, Italy.
7 Internal Medicine Department, Policlinico Hospital San Pietro, Italy.