1. Department of Immunology, Genetics and Pathology, Uppsala University, Uppsala, Sweden
2. Department of Surgery, Region Gävleborg, Gävle, Sweden
3. Institute of Clinical Science, University of Bergen, Bergen, Norway
4. Department of Gastrointestinal Surgery, Stavanger University Hospital, Stavanger, Norway
5. Department of Registration, Cancer Registry of Norway, Oslo, Norway
6. Department of Research and Innovation, Møre and Romsdal Hospital Trust, Ålesund, Norway
7. Department of Oncology, Oslo University Hospital, Oslo, Norway