1. Department of Obstetrics and Gynaecology, Freiburg Faculty of Medicine University of Freiburg Freiburg Germany
2. Department of Gynaecology and Gynaecological Oncology Ev. Kliniken Essen‐Mitte Essen Germany
3. Department of Gynecology with Center for Oncological Surgery Charité University Medical Center Berlin Berlin Germany
4. Department of Women's Health Tuebingen University Hospital Tuebingen Germany
5. Department of Obstetrics and Gynecology University Hospital, LMU Munich Munich Germany
6. Department of Gynecology and Obstetrics Universitätsklinikum Göttingen Göttingen Germany
7. Department of Gynecology and Obstetrics Universitätsklinikum Carl Gustav Carus Dresden; TU Dresden Dresden Germany
8. Institute of Pathology and Neuropathology University Hospital Tuebingen Tuebingen Germany
9. Institute of Pathology Ludwig‐Maximillians‐University Munich Munich Germany
10. Department of Gynaecology and Obstetrics, Faculty of Medicine Essen University Clinics Essen Essen Germany
11. Department of Gynaecology and Obstetrics University Centre Mainz, Faculty of Medicine Mainz Germany