1. Department of Womenʼs Health, University Hospital of Tübingen, Tübingen, Germany
2. Department of Urogynaecology, German Pelvic Floor Centre, St. Hedwig Hospital, Berlin, Germany
3. Department of Gynaecology and Obstetrics, Helios Hospital Erfurt, Erfurt, Germany
4. Department of Gynecology and Obstetrics, University Hospital of Heidelberg, Heidelberg, Germany