1. Department of Hepato-Pancreato-Biliary Surgery, Oslo University Hospital, Sognsvannsveien 20, 0317 Oslo, Norway
2. Department of Gastrointestinal Surgery, Oslo University Hospital, Sognsvannsveien 20, 0317 Oslo, Norway
3. Department of Transplantation Surgery, Oslo University Hospital, Sognsvannsveien 20, 0317 Oslo, Norway
4. Department of Radiology, Oslo University Hospital, Sognsvannsveien 20, 0317 Oslo, Norway