1. Department of Clinical Medicine, Medical Imaging Research Group, Faculty of Health Sciences, UiT- The Arctic University of Norway, Tromsø, Norway
2. Department of Surgery, Finnmark hospital trust, Hammerfest, Norway
3. Centre for Clinical Documentation and Evaluation, Northern Norway Regional Health Authority trust, Tromsø, Norway
4. Department of Economics, Norwegian System of Patient Injury Compensation, Oslo, Norway
5. Department of Orthopaedic, Hand and Plastic Surgery, University Hospital of North Norway, Tromsø, Norway