1. Department of Obstetrics and Gynaecology, Radboud University Medical Center, Nijmegen, The Netherlands.
2. Department of Obstetrics and Gynaecology, Canisius-Wilhelmina Hospital, Nijmegen, The Netherlands.
3. Department of Pathology, Radboud University Medical Center, Nijmegen, The Netherlands.
4. Centre of Gynaecologic Oncology Amsterdam, Academic Medical Center, Amsterdam, The Netherlands.
5. Department of Obstetrics and Gynaecology, Catharina Hospital, Eindhoven, The Netherlands.
6. Department of Obstetrics and Gynaecology, Màxima Medical Centre, Veldhoven, The Netherlands.
7. Department of Obstetrics and Gynaecology, Elkerliek Hospital, Helmond, The Netherlands.
8. Department of Obstetrics and Gynaecology, Amphia Hospital, Breda, The Netherlands.
9. Department of Obstetrics and Gynaecology, Jeroen Bosch Hospital, 's-Hertogenbosch, The Netherlands.
10. Department of Obstetrics and Gynaecology, Elisabeth-Tweesteden Hospital, Tilburg, The Netherlands.