1. Department of Clinical Science, Intervention and Technology, Division of Obstetrics and Gynaecology, Karolinska Institutet, Karolinska University Hospital Huddinge, Stockholm, Sweden
2. Competence Centre on Reproductive Medicine and Biology, Tartu, Estonia
3. Department of Obstetrics and Gynaecology, University of Tartu, Tartu, Estonia
4. Department of Women’s and Children’s Health, Uppsala University, Akademiska Sjukhuset, Uppsala, Sweden