1. Department of Infectious Diseases, Inselspital, Bern University Hospital, University of Bern , Bern , Switzerland
2. Graduate School of Health Sciences, University of Bern , Bern , Switzerland
3. Department for Visceral Surgery and Medicine, Inselspital, Bern University Hospital, University of Bern , Bern , Switzerland
4. Hepatology, Department of BioMedical Research, University of Bern , Bern , Switzerland
5. Department of Infectious Diseases and Hospital Epidemiology, University Hospital Zurich, University of Zurich , Zurich , Switzerland
6. Institute of Medical Virology, University of Zurich , Zurich , Switzerland
7. University Department of Medicine and Infectious Diseases Service, Kantonsspital Baselland, University of Basel , Bruderholz , Switzerland
8. Institute of Social and Preventive Medicine , University of Bern, Bern , Switzerland