1. Department of Obstetrics & Gynaecology; Academic Medical Centre; Amsterdam the Netherlands
2. Department of Epidemiology, Biostatistics & Bioinformatics; Academic Medical Centre; Amsterdam the Netherlands
3. Department of Obstetrics and Gynaecology; GROW - School for Oncology and Developmental Biology; Maastricht University Medical Centre; Maastricht the Netherlands
4. Department of Obstetrics & Gynaecology; Martini Hospital; Groningen the Netherlands
5. Department of Public Health; Academic Medical Centre; Amsterdam the Netherlands
6. Clinical & Population Perinatal Health Research; Kolling Institute of Medical Research; University of Sydney; Sydney NSW Australia
7. Department of Obstetrics & Gynaecology; University Medical Centre Groningen; Groningen the Netherlands
8. Department of Obstetrics & Gynaecology; VU University Medical Centre; Amsterdam the Netherlands
9. Department of Obstetrics & Gynaecology; Erasmus Medical Centre; Rotterdam the Netherlands
10. Department of Obstetrics & Gynaecology; University Medical Centre Utrecht; Utrecht the Netherlands
11. Department of Obstetrics & Gynaecology; Leiden University Medical Centre; Leiden the Netherlands
12. Department of Obstetrics & Gynaecology; Máxima Medical Centre; Veldhoven the Netherlands
13. Department of Obstetrics & Gynaecology; Radboud University Nijmegen; Nijmegen the Netherlands
14. Department of Obstetrics & Gynaecology; Albert Schweitzer Hospital; Dordrecht the Netherlands
15. Department of Obstetrics & Gynaecology; ZGT; Almelo the Netherlands
16. Department of Obstetrics & Gynaecology; Isala Clinics; Zwolle the Netherlands
17. Department of Paediatrics; Maastricht University Medical Centre; Maastricht the Netherlands
18. The Robinson Institute; School of Paediatrics and Reproductive Health; University of Adelaide; Adelaide SA Australia