1. Department of Obstetrics and Gynecology; Clinical Division of General Gynecology and Gynecologic Oncology; Medical University of Vienna; Vienna Austria
2. Karl Landsteiner Institut fuer Spezielle Gynaekologie und Geburtshilfe; Vienna Austria
3. Center for Medical Statistics, Informatics and Intelligent Systems; Medical University of Vienna; Vienna Austria
4. Department of Obstetrics and Gynecology; St. Josef Spital; Vienna Austria
5. Karl Landsteiner Institut fuer Diagnostik und Therapie in der Frauenheilkunde; Vienna Austria
6. Department of Urology and Andrology; Sozialmedizinisches Zentrum Ost- Donauspital; Vienna Austria