1. Department of Gynecology and Obstetrics, Ludwig-Maximilians-University, Munich
2. Department of Gynecology and Obstetrics, University of Ulm, Ulm
3. Head of Division Gynecologic Oncology National Center for Tumor Diseases, Department of Gynecology and Obstetrics, University of Heidelberg, Heidelberg
4. Luisenkrankenhaus Düsseldorf, Düsseldorf
5. Gemeinschaftspraxis Dr. R. Lorenz/N. Hecker, Braunschweig
6. Department of Gynecology and Obstetrics, Heinrich Heine University of Düsseldorf, Düsseldorf
7. Department of Gynecology and Obstetrics, University Hospital Erlangen, Comprehensive Cancer Center Erlangen-EMN, Friedrich-Alexander University Erlangen-Nuremberg, Erlangen