1. Department of Surgery P, Aarhus University Hospital , Aarhus, Denmark;
2. Danish Colorectal Cancer Group , Copenhagen, Denmark;
3. OPEN, Odense Patient Data Explorative Network, Odense University Hospital/Department of Clinical Research, University of Southern Denmark , Odense, Denmark;
4. Department of Pathology, Herlev Hospital , Herlev, Denmark;
5. Department of Oncology, Copenhagen University Hospital , Copenhagen, Denmark;
6. Department of Surgery, Roskilde and Køge Hospitals , Roskilde, Denmark