1. Department of Surgery, Region Västmanland Hospital, Västerås, Sweden
2. Centre for Clinical Research Uppsala University, Region Västmanland Hospital, Västerås, Sweden
3. Department of Radiology, Region Västmanland Hospital, Västerås, Sweden
4. Department of Gastrointestinal Surgery, Akershus University Hospital, Lørenskog, Norway
5. Department of Abdominal Surgery, University of Helsinki and HUS Helsinki University Hospital, Helsinki, Finland
6. Department of Transplantation and Liver Surgery, University of Helsinki and Helsinki University Hospital, Helsinki, Finland