1. Institute of Clinical Molecular Biology; Christian-Albrechts-University; Kiel; Germany
2. Department of Medicine; University Hospital of Heidelberg; Heidelberg; Germany
3. 1st Department of Medicine; University Medical Center Hamburg-Eppendorf; Hamburg; Germany
4. Department of Gastroenterology and Hepatology; Karolinska University Hospital Huddinge; Stockholm; Sweden
5. Section of Gastroenterology and Hepatology; Department of Internal Medicine; Sahlgrenska University Hospital; Gothenburg; Sweden
6. 1st Department of Medicine; University of Mainz; Mainz; Germany
7. Department of Medicine 2; Grosshadern; University of Munich; Munich; Germany
8. Institute of Genetic Epidemiology; Helmholtz Center Munich; German Research, Center for Environmental Health; Neuherberg; Germany
9. Department of Human Genetics; University Hospital of Heidelberg; Heidelberg; Germany
10. Department of Hepatobiliary Surgery and Transplantation; University Medical Center Hamburg-Eppendorf; Hamburg; Germany
11. Department of Internal Medicine 4; University Hospital of Heidelberg; Heidelberg; Germany
12. Department of General; Thoracic, and Transplantation Surgery; University Hospital; Kiel; Germany
13. Department of Gastroenterology and Hepatology; University Medical Center Groningen and University of Groningen; Groningen; now Netherlands
14. Department of Genetics; University Medical Center Groningen and University of Groningen; Groningenowhe; Netherlands
15. Department of Gastroenterology and Hepatology; Academic Medical Center; University of Amsterdam; Amsterdam; The Netherlands
16. Division of Genetics and Molecular Medicine; King's College London; London; United Kingdom
17. Department of Gastroenterology; University Hospital Gasthuisberg; Leuven; Belgium