1. 1Norwegian PSC research center, Department of Transplantation Medicine, Division of Cancer Medicine, Surgery and Transplantation, Oslo University Hospital Rikshospitalet, Oslo, Norway
2. 2Section of Gastroenterology, Department of Transplantation Medicine, Division of Cancer Medicine, Surgery and Transplantation, Oslo University Hospital Rikshospitalet, Oslo, Norway
3. 3Institute of Clinical Medicine, Faculty of Medicine, University of Oslo, Norway
4. 4Research Institute of Internal Medicine, Division of Cancer Medicine, Oslo University Hospital, Oslo, Norway