1. Department of Community Medicine The Arctic University of NorwayUniversity of Tromsø (UiT) Tromsø Norway
2. Women's Health and Perinatology Research Group Department of Clinical Medicine UiT and University Hospital of North Norway (UNN) Tromsø Norway
3. Division of Obstetrics and Gynecology Department of Clinical Science, Intervention and Technology Karolinska Institutet Stockholm Sweden
4. Department of Reviews and Health Technology Assessments Norwegian Institute of Public Health (NIPH) Oslo Norway