1. Department of Obstetrics and Gynecology; Sørlandet Hospital; Kristiansand Norway
2. Department of Obstetrics and Gynecology; Haukeland University Hospital; Bergen Norway
3. Departments of Global Public Health and Primary Care and Clinical Medicine; Haukeland University Hospital; Bergen Norway
4. Centre for Cancer Biomarkers; University of Bergen; Bergen Norway
5. Department of Gynecologic Oncology; Oslo University Hospital; Norwegian Radium Hospital; Oslo Norway
6. Department of Obstetrics and Gynecology; Stavanger University Hospital; Stavanger Norway
7. Department of Obstetrics and Gynecology; Akershus University Hospital; Lørenskog Norway
8. Department of Obstetrics and Gynecology; Førde Central Hospital; Førde Norway
9. Department of Obstetrics and Gynecology; Vestfold Hospital Trust; Tønsberg Norway
10. Department of Gynecologic Oncology; University Hospital of Tromsø; Tromsø Norway
11. Department of Obstetrics and Gynecology; St. Olav's University Hospital; Trondheim Norway
12. Institute for Cancer Genetics and Informatics; Oslo University Hospital; Oslo Norway