1. Department of Obstetrics and GynaecologyRadboud Institute for Molecular Life Sciences, Radboud university medical center Nijmegen The Netherlands
2. Department of Obstetrics and GynaecologyCatharina Hospital Eindhoven The Netherlands
3. Department of BiostatisticsRadboud Institute for Health Sciences, Radboud university medical center Nijmegen The Netherlands
4. Department of Medical MicrobiologyRadboud university medical center Nijmegen The Netherlands
5. Department of Obstetrics and GynaecologyRadboud university medical center Nijmegen The Netherlands
6. Department of PathologyRadboud university medical center Nijmegen The Netherlands
7. PALGA, The Nationwide Network and Registry of Histo‐ and Cytopathology Houten The Netherlands