1. Department of Gynecology, Jena University Hospital, Friedrich-Schiller-University, Jena, Germany
2. Institute of Medical Statistics, Information Sciences and Documentation, Jena University Hospital, Friedrich-Schiller-University, Jena, Germany
3. Department of Gynecology and Obstetrics, Universitätsklinikum Schleswig-Holstein, Lübeck, Germany
4. Institute of Pathology, Jena University Hospital, Friedrich-Schiller-University, Jena, Germany
5. Department of Gynecology and Obstetrics, Helios Klinikum Erfurt GmbH, Erfurt, Germany
6. Department of Gynecology and Obstetrics, Medizinische Hochschule Hannover, Hannover, Germany
7. Department of Gynecology and Obstetrics, Klinikum Kassel GmbH, Kassel, Germany
8. Department of Gynecology and Obstetrics, Ludwig-Maximilians-University Munich, Campus Grosshadern, Munich, Germany
9. Department of Gynecology and Obstetrics, Klinikum Wolfsburg, Wolfsburg, Germany
10. Institute for Cytology and Dysplasia, Fürstenbergkarree, Berlin, Germany