1. Division of Clinical Cancer Epidemiology, Department of Oncology and Pathology, Karolinska Institutet, Stockholm, Sweden
2. Department of Women's and Children's Health, Karolinska Institutet, Stockholm, Sweden
3. Phyllis F. Cantor Center, Dana Farber Cancer Institute, Boston, Massachusetts
4. Department of Clinical Science, Intervention and Technology, Karolinska Institutet, Karolinska University Hospital-Huddinge, Stockholm, Sweden
5. Division of Clinical Cancer Epidemiology, Department of Oncology, Sahlgrenska Academy, Göteborg, Sweden