1. Department of Hepatology, INSERM UMR1149, University Paris Diderot, Hôpital Beaujon, Clichy, France;
2. Department of Medicine, Goethe University Hospital, Frankfurt, Germany;
3. Department of Hepatology, Rush University Medical Center, Chicago, IL, USA;
4. Department of Infectious Disease, Merck & Co. Inc., Kenilworth, NJ, USA