1. Department of Oncology, Division of Cancer Medicine, Oslo University Hospital, Oslo, Norway;
2. Institute of Clinical Medicine, Faculty of Medicine, University of Oslo, Oslo, Norway;
3. Department of Research and Development, Division of Emergencies and Critical Care, Oslo University Hospital, Oslo, Norway;
4. Lovisenberg Diaconal University College, Oslo, Norway;
5. Research Support Services, Oslo University Hospital, Oslo, Norway;
6. Department of Oncology and K.G. Jebsen Colorectal Cancer Research Centre, Division of Cancer Medicine, Oslo University Hospital, Oslo, Norway;
7. Department of Obstetrics and Gynecology, Division of Surgery, Sørlandet Hospital HF, Kristiansand, Norway;
8. School of Nursing, University of California, San Francisco, CA, USA;
9. Institute of Health and Society, Faculty of Medicine, University of Oslo, Oslo, Norway