1. Department of Obstetrics and Gynaecology Radboud University Medical Centre Nijmegen the Netherlands
2. Department of Laboratory Medicine Radboud University Medical Centre Nijmegen the Netherlands
3. Department of Gynaecologic Oncology Antoni van Leeuwenhoek Amsterdam the Netherlands
4. Cancer Institute Amsterdam Amsterdam the Netherlands
5. Department of Medical Oncology Radboud University Medical Centre Nijmegen the Netherlands