1. Department of Gastroenterology, Hepatology and Endocrinology; Hannover Medical School; Hannover Germany
2. 1st Department of Medicine; University Medical Center Hamburg-Eppendorf; Hamburg Germany
3. Department of Gastroenterology and Hepatology; University Hospital of Essen; Essen Germany
4. Department of Medicine; University Hospital of Heidelberg; Heidelberg Germany
5. Department of Internal Medicine I; University Hospital of Regensburg; Regensburg Germany
6. Department of Medicine II, Liver Center Munich; University of Munich; Munich Germany
7. Hepatobiliary and Transplant Surgery; University Medical Center Hamburg-Eppendorf; Hamburg Germany
8. General, Visceral and Transplantation Surgery; University Hospital of Essen; Essen Germany
9. General, Visceral and Transplantation Surgery; Hannover Medical School; Hannover Germany
10. Department of Internal Medicine I; Johann Wolfgang Goethe-University Hospital; Frankfurt/Main Germany
11. Department of Medicine I; Johannes Gutenberg University Mainz; Mainz Germany
12. Department of Medicine II; Saarland University Medical Center; Homburg/Saar Germany
13. Department of Internal Medicine I; University of Bonn; Bonn Germany