1. Division of Obstetrics and Gynecology, Department of Clinical Science, Intervention and Technology, Karolinska Institutet, Stockholm, Sweden
2. Division of Obstetrics and Gynecology, Department of Women's and Children's Health, Uppsala University, Uppsala, Sweden
3. Department of Animal Environment and Health, Swedish University of Agricultural Sciences, Skara, Sweden
4. School of Life Science, University of Skövde, Skövde, Sweden