1. Department of Pathology Radboud University Medical Center Nijmegen The Netherlands
2. Department of Obstetrics and Gynecology Radboud University Medical Center Nijmegen The Netherlands
3. Department of Obstetrics and Gynecology Canisius‐Wilhemina Hospital Nijmegen The Netherlands
4. Department of Obstetrics and Gynecology Erasmus University Medical Center Rotterdam The Netherlands
5. Department of Obstetrics and Gynecology Máxima Medical Center Veldhoven The Netherlands
6. Department of Obstetrics and Gynecology St. Antonius Hospital Nieuwegein The Netherlands
7. Department of Obstetrics and Gynecology Elisabeth‐TweeSteden Hospital Tilburg The Netherlands