1. Division of Gastroenterology and Hepatology Department of Internal Medicine III Medical University of Vienna Vienna Austria
2. HIV and Liver Disease Study Group Medical University of Vienna Vienna Austria
3. Division of Gastroenterology and Hepatology Department of Medicine II Klinik Ottakring Vienna Austria
4. First Department of Medicine Paracelsus Medical University Salzburg Austria
5. Department of Infectious Diseases and Tropical Medicine Klinik Favoriten Vienna Austria
6. Department of Gastroenterology and Hepatology Ordensklinikum Linz Barmherzige Schwestern Linz Austria
7. Department of Internal Medicine and Gastroenterology and Hepatology Kepler Universitätsklinikum Linz Austria
8. Division of Gastroenterology and Hepatology Department of Internal Medicine Medical University of Graz Graz Austria
9. Institute for Hygiene, Microbiology and Environmental Medicine Medical University of Graz Graz Austria
10. Department of Internal Medicine II University Hospital St. Pölten St. Pölten Austria
11. Central Institute for Medical and Chemical Laboratory Diagnostics Medical University of Innsbruck Innsbruck Austria
12. Department of Internal Medicine and Gastroenterology, Hepatology, Endocrinology, Rheumatology and Nephrology Klinikum Klagenfurt am Wörthersee Klagenfurt Austria
13. Center for Virology Medical University of Vienna Vienna Austria
14. Department of Internal Medicine I Medical University of Innsbruck Innsbruck Austria