[1] Hannover Med Sch, Dept Gastroenterol Hepatol Infect Dis & Endocrinol, Carl Neuberg Str 1, D-30625 Hannover, Germany
[2] German Ctr Infect Res DZIF, Braunschweig, Germany
[3] Fdn IRCCS CaGranda Osped Maggiore Policlin, Div Gastroenterol & Hepatol, Milan, Italy
[4] Univ Milan, CRC AM&A Migliavacca Ctr Liver Dis, Dept Pathophysiol & Transplantat, Milan, Italy