1. Abdominal Disease Center, Bispebjerg Hospital and Danish Colorectal Cancer Group, Copenhagen, Denmark
2. Department of Surgery, Skåne University Hospital, Malmö, Sweden
3. Department of Surgery, Vâstmanlands Hospital, Västerås, Sweden
4. Department of Surgery, Aarhus University Hospital, Aarhus, Denmark
5. Department of Radiology, Aarhus University Hospital, Aarhus, Denmark
6. Manchester Cancer Research Centre and NIHR Manchester Biomedical Research Centre, the Christie NHS Foundation Trust, Division of Cancer Science, School of Medical Sciences, Faculty of Biology, Medicine, and Health, University of Manchester, Manchester, England
7. Department of Clinical Epidemiology, Aarhus University Hospital, Aarhus, Denmark
8. Department of Surgical Science, Uppsala University, Uppsala, Sweden
9. Department of Health Research and Policy, Stanford University, Stanford, California