1. Department of Surgery Örebro University Hospital Örebro Sweden
2. Department of Surgery, Faculty of Medicine and Health Örebro University Örebro Sweden
3. Clinical Epidemiology and Biostatistics, School of Medical Sciences Örebro University Örebro Sweden
4. SSORG—Scandinavian Surgical Outcomes Research Group, Department of Surgery Institute of Clinical Sciences, Sahlgrenska Academy, University of Gothenburg Gothenburg Sweden
5. Region Västra Götaland, Department of Surgery Sahlgrenska University Hospital Gothenburg Sweden
6. Gastrointestinal Oncology and Colorectal Surgery Unit, Department of Pelvic Cancer Karolinska University Hospital Stockholm Sweden