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