1. School of Health and Welfare, Dalarna University, Falun, Sweden
2. Department of Clinical Sciences, Danderyd Hospital, Karolinska Institutet, Stockholm, Sweden
3. Department of Women’s and Children’s Health, Karolinska Institutet, Stockholm, Sweden
4. WHO Collaborating Centre, Division of Gynecology and Reproduction, Karolinska University Hospital, Stockholm, Sweden
5. Department of Obstetrics and Gynecology, Danderyd Hospital, Stockholm, Sweden