1. Department of Internal Medicine IV; University Hospital of Heidelberg; Heidelberg Germany
2. Joint Division Molecular Metabolic Control; German Cancer Research Center (DKFZ); Heidelberg Germany
3. Department of Internal Medicine I; University Hospital of Heidelberg; Heidelberg Germany
4. Norwegian PSC Research Center; Research Institute for Internal Medicine and Department of Gastroenterology; Division for Cancer, Surgery and Transplantation; Oslo University Hospital; Oslo Norway
5. Institute of Clinical Medicine; Faculty of Medicine; University of Oslo; Oslo Norway
6. Department of Medicine II (Gastroenterology, Hepatology and Infectious Diseases); University Hospital of Heidelberg at Mannheim; Mannheim Germany
7. Department of Internal Medicine I; University of Ulm; Ulm Baden-Wuerttemberg Germany
8. Department of Medicine II; Freiburg University Medical Center; University of Freiburg; Freiburg Germany
9. Department of Surgery; University Hospital of Heidelberg; Heidelberg Germany
10. Institute of Pathology; University Hospital of Heidelberg; Heidelberg Germany