1. Department of Obstetrics and Gynaecology Radboud University Medical Centre Nijmegen The Netherlands
2. Department of Obstetrics and Gynaecology Canisius‐Wilhelmina Hospital Nijmegen The Netherlands
3. Department of Pathology Radboud University Medical Centre Nijmegen The Netherlands
4. Department of Pathology Canisius‐Wilhelmina Hospital Nijmegen The Netherlands
5. Department of Obstetrics and Gynaecology Elisabeth‐TweeSteden Hospital Tilburg The Netherlands
6. Department of Pathology Elisabeth‐TweeSteden Hospital Tilburg The Netherlands
7. Department of Human Genetics Radboud University Medical Centre Nijmegen The Netherlands