1. Department of Oncology, Oslo University Hospital, Oslo, Norway
2. Institute of Clinical Medicine, University of Oslo, Oslo, Norway
3. Department of Oncology, Southern Hospital Trust, Kristiansand, Norway
4. Department of Oncology, Haukeland University Hospital, University of Bergen, Bergen, Norway
5. Department of Public Health and General Practice, Norwegian University of Science and Technology, Trondheim, Norway
6. Department of Immunology, Genetics and Pathology, Uppsala University, Uppsala, Sweden
7. Department of Oncology, Odense University Hospital, Institute of Clinical Research, University of Southern Denmark, Odense, Denmark
8. Department of Oncology, Herlev and Gentofte Hospital, Copenhagen University Hospital, Herlev, Denmark
9. Department of Cancer Genetics, Institute for Cancer Research, Oslo University Hospital, Oslo, Norway
10. Akershus University Hospital, Nordbyhagen, Norway
11. K.G. Jebsen Colorectal Cancer Research Centre, Oslo University Hospital, Oslo, Norway
12. Department of Pharmacology, Institute of Clinical Medicine, Faculty of Medicine, University of Oslo, Oslo, Norway