1. Department of Public Health and Nursing, Faculty of Medicine and Health Sciences, Norwegian University of Science and Technology, Trondheim, Norway
2. Department of Clinical and Molecular Medicine, Faculty of Medicine and Health Sciences, Norwegian University of Science and Technology, Trondheim, Norway
3. Department of Pathology, St. Olavs Hospital, Trondheim University Hospital, Trondheim, Norway
4. Department of Breast and Endocrine Surgery, St. Olavs Hospital, Trondheim University Hospital, Trondheim, Norway
5. Centre for Cancer Biomarkers CCBIO, Department of Clinical Medicine, University of Bergen, Bergen, Norway
6. Department of Pathology, Haukeland University Hospital, Bergen, Norway