1. Department of Surgical Sciences, Uppsala University , Uppsala , Sweden
2. Department of Surgery in Linköping and Department of Biomedical and Clinical Sciences, Linköping University , Linköping , Sweden
3. Department of GI and HPB Surgery , Institute of Clinical Medicine, , Tromsø , Norway
4. University of Tromsø , Institute of Clinical Medicine, , Tromsø , Norway
5. Department of GI and HPB Surgery, University Hospital of Northern Norway , Tromsø , Norway
6. Department of Surgery, Örebro University , Örebro , Sweden
7. Department of Surgical and Perioperative Sciences Surgery, Umeå University , Umeå , Sweden
8. Department of Gastrointestinal Surgery, Norwegian University of Science and Technology , Trondheim , Norway
9. Department of Pediatric and Gastrointestinal Surgery, Oslo University Hospital , Oslo , Norway
10. Department of Surgery, Skane University Hospital , Lund , Sweden
11. Department of Surgery, University of Oulu and Oulu University Hospital , Oulu , Finland
12. Department of Surgery and Transplantation, Copenhagen University Hospital , Copenhagen , Denmark
13. Department of Clinical Science , Intervention and Technology, Division of Surgery, , Stockholm , Sweden
14. Karolinska Institutet , Intervention and Technology, Division of Surgery, , Stockholm , Sweden
15. Nuffield Department of Surgical Sciences, University of Oxford , Oxford , UK
16. Department of Molecular Medicine and Surgery , Karolinska Institutet, Stockholn , Sweden
17. Department of Surgery and Cancer, Imperial College London , London , UK
18. Department of Surgery, Odense University Hospital , Odense , Denmark
19. Department of Surgery, Sahlgrenska University Hospital , Gothenburg , Sweden
20. Department of Clinical Medicine, University of Copenhagen , Copenhagen , Denmark