| Affiliation: | 1. Department of Clinical Science, University of Bergen, , Bergen, Norway;2. Department of Surgery, Haraldsplass Deaconess Hospital, , Bergen, Norway;3. Department of Clinical Medicine, University of Bergen, , Bergen, Norway;4. Department of Pathology, Haukeland University Hospital, , Bergen, Norway;5. Department of Surgery, Stavanger University Hospital, , Stavanger, Norway;6. Department of Pathology, Stavanger University Hospital, , Stavanger, Norway;7. Department of Surgery, Akershus University Hospital, , Oslo, Norway;8. Centre for Clinical Research, Haukeland University Hospital, , Bergen, Norway;9. Department of Global Public Health and Primary Care, University of Bergen, , Bergen, Norway |
