1. Department of Gastrointestinal Surgery University Hospital of North Norway Tromsø Norway
2. Gastrosurgical Research Group, Department of Clinical Medicine, UiT the Arctic University of Norway Tromsø Norway
3. Outpatient Clinic, Division of Surgery, Oncology, and Women's Health University Hospital of North Norway Tromsø Norway
4. Colorectal Unit, Department of General Surgery Auckland City Hospital Auckland New Zealand