1. CRC “A.M. e A. Migliavacca” Center for the Study of Liver Disease Division of Gastroenterology and Hepatology Fondazione IRCCS Cà Granda Ospedale Maggiore Policlinico; Università degli Studi di Milano; Milan Italy
2. Section of Hepatology Clinic and Polyclinic for Gastroenterology and Rheumatology; University Clinic Leipzig; Leipzig Germany