1. Department of Gastroenterology, Hepatology, Infectious Diseases and Endocrinology Hannover Medical School Hannover Germany
2. German Centre for Infection Research (DZIF) Braunschweig Germany
3. Division of Gastroenterology and Hepatology Foundation IRCCS Ca' Granda Ospedale Maggiore Policlinico Milan Italy
4. CRC “A. M. and A. Migliavacca” Center for Liver Disease, Department of Pathophysiology and Transplantation University of Milan Milan Italy