1. Department of Obstetrics and Gynecology, Medical Faculty, Heinrich-Heine-University Düsseldorf, Düsseldorf, Germany
2. Institute of Diagnostic and Interventional Radiology, Medical Faculty, Heinrich-Heine-University Düsseldorf, Düsseldorf, Germany
3. Institute of Pathology and Functional Cytopathology, Medical Faculty, Heinrich-Heine-University Düsseldorf, Düsseldorf, Germany