1. Department of Obstetrics and Gynecology, University Hospital Homburg, Kirrberger Straße 100, 66424 Homburg, Germany
2. Department of Obstetrics and Gynecology, Klinikum Bielefeld, Teutoburger Straße 50, 33604 Bielefeld, Germany
3. Department of Urology, Lukaskrankenhaus GmbH, Preußenstraße 84, 41464 Neuss, Germany
4. Department of Gynecology, University Hospital Charité, Campus Virchow-Klinikum (CVK), Mittelallee 9, 13353 Berlin, Germany
5. Department of Radiology, University Hospital Homburg, Kirrberger Straße 100, 66424 Homburg, Germany