1 Experimental Transplantation and Malignancy Research Group, Division of Surgery, Inflammatory Diseases and Transplantation, Oslo University Hospital, Oslo, Norway.
2 Section for Transplantation Surgery, Department of Transplantation Medicine, Oslo University Hospital, Oslo, Norway.
3 Department of Hepatobiliary Surgery, Oslo University Hospital, Oslo, Norway.
4 Institute of Clinical Medicine, University of Oslo, Oslo, Norway.