1. Department of Surgery, Vejle Hospital, University Hospital of Southern Denmark, Beriderbakken 4, 7100 Vejle, Denmark
2. Institute of Regional Health Research, University of Southern Denmark, Campusvej 55, 5230 Odense M, Denmark
3. Colorectal Cancer Center South, Vejle Hospital, University Hospital of Southern Denmark, Beriderbakken 4, 7100 Vejle, Denmark
4. Department of Oncology, Vejle Hospital, University Hospital of Southern Denmark, Beriderbakken 4, 7100 Vejle, Denmark
5. Open Patient Data Exploratory Network, Odense University Hospital, J. B. Winsløws Vej 9A, 3. Sal, 5000 Odense C, Denmark
6. Department of Clinical Research, University of Southern Denmark, Campusvej 55, 5230 Odense M, Denmark