1. Department of Genetics, Institute for Cancer Research, Oslo University Hospital, The Norwegian Radium Hospital, Oslo, Norway
2. K.G. Jebsen Centre for Breast Cancer Research, Institute for Clinical Medicine, Faculty of Medicine, University of Oslo, Oslo, Norway
3. Helen Diller Family Comprehensive Cancer Center, University of California at San Francisco, San Francisco, California, USA
4. Department of Epidemiology and Biostatistics, University of California at San Francisco, San Francisco, California, USA
5. Department of Clinical Molecular Biology (EpiGen), Medical Division, Akershus University Hospital, Lørenskog, Norway
6. Institute for Clinical Medicine, Faculty of Medicine, University of Oslo, Oslo, Norway
7. Department of Surgery, Oslo University Hospital, Ullevål, Oslo, Norway
8. Department of Breast-Endocrine Surgery, Surgical Division, Akershus University Hospital, Lørenskog, Norway