1. Norwegian PSC Research Center, Division of Surgery, Inflammatory Diseases and Transplantation Oslo University Hospital Rikshospitalet Oslo Norway
2. Institute of Clinical Medicine University of Oslo Oslo Norway
3. Research Institute of Internal Medicine Oslo University Hospital Rikshospitalet Oslo Norway
4. Section of Gastroenterology, Department of transplantation medicine, Division of Surgery, Inflammatory Diseases and Transplantation Oslo University Hospital Rikshospitalet Oslo Norway