1. Department of Oncology and Pathology; Karolinska Institutet; Stockholm Sweden
2. Research and Development; Stockholm Sjukhem Foundation; Stockholm Sweden
3. Department of Women's and Children's Health; Karolinska Institutet; Stockholm Sweden
4. Sophiahemmet University College; Stockholm Sweden
5. Centre of Public Health Sciences, Faculty of Medicine; University of Iceland; Reykjavík Iceland
6. Department of Epidemiology; Harvard School of Public Health; Boston MA USA
7. Department of Oncology, Division of Clinical Cancer Epidemiology; The Sahlgrenska Academy; Gothenburg Sweden
8. Department of Oncology, Clinical Sciences; Lund University; Lund Sweden