1. Department of Obstetrics and Gynecology University of Gothenburg, Institute of Clinical Sciences, Sahlgrenska Academy Gothenburg Sweden
2. Department of Obstetrics and Gynecology Region Västra Götaland, Sahlgrenska University Hospital Gothenburg Sweden
3. Department of Anesthesiology and Intensive Care University of Gothenburg, Institute of Clinical Sciences, Sahlgrenska Academy Gothenburg Sweden
4. Department of Urology University of Gothenburg, Institute of Clinical Sciences, Sahlgrenska Academy Gothenburg Sweden