| Affiliation: | 1. @guy_worley 0000-0002-8265-7641 Surgical Epidemiology, Trials and Outcome Centre (SETOC), St Mark's Hospital and Academic Institute, Harrow, Middlesex, UK;2. Department of Surgery and Cancer, Imperial College London, London, UK;3. Department of Molecular Medicine and Surgery, Karolinska Institutet, Stockholm, Sweden;4. Center for Digestive Disease, Division of Coloproctology, Karolinska University Hospital, Stockholm, Sweden;5. Surgical Epidemiology, Trials and Outcome Centre (SETOC), St Mark's Hospital and Academic Institute, Harrow, Middlesex, UK;6. Academic Department of Surgery, University of Birmingham, Birmingham, UK;7. Clinical Epidemiology Unit, Department of Medicine, Karolinska Institutet, Stockholm, Sweden;8. Sachs' Children and Youth Hospital, Stockholm, Sweden;9. Unit of Biostatistics, Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden;10. Division of Surgery, Department of Clinical and Experimental Medicine, Faculty of Health Sciences, Link?ping University, Link?ping, Sweden;11. Department of Surgery, County Council of ?sterg?tland, Link?ping, Sweden |
