1. Department of Hepatology and Gastroenterology, Campus Virchow Clinic and Campus Charité Mitte Charité University Medicine Berlin Germany
2. University of Cologne, Faculty of Medicine, and University Hospital Cologne Department of Gastroenterology and Hepatology Cologne Germany
3. Department of Medicine University of California San Diego La Jolla California USA
4. University of Cologne, Faculty of Medicine, and University Hospital Cologne Department I of Internal Medicine Cologne Germany
5. German Centre for Infection Research (DZIF) partner site Bonn/Cologne
6. Department of Internal Medicine, Infectious Diseases Goethe University Frankfurt Frankfurt am Main Germany
7. Wisplinghoff Laboratories Cologne Germany
8. University of Cologne, Faculty of Medicine, Institute for Medical Microbiology, Immunology and Hygiene University Hospital of Cologne Cologne Germany
9. Institute for Virology and Medical Microbiology University Witten/Herdecke Witten Germany
10. Department of Medicine II, Saarland University Medical Center Saarland University Homburg Germany
11. Laboratory of Metabolic Liver Diseases, Department of General, Transplant and Liver Surgery Medical University of Warsaw Warsaw Poland