1. Department of Clinical Science, Intervention and Technology, Division of Obstetrics and Gynaecology, Karolinska Institutet, Karolinska University Hospital Huddinge, Stockholm, Sweden
2. Department of Women’s and Children’s Health, Uppsala University, Akademiska Sjukhuset, Uppsala, Sweden
3. Department of Women’s and Children’s Health, Obstetrics and Gynaecology, Karolinska Institutet, Stockholm, Sweden