1. Department of Obstetrics and Gynecology; GROW-School for Oncology and Developmental Biology; Maastricht University Medical Center+; Maastricht the Netherlands
2. Department of Clinical Epidemiology and Medical Technology Assessment (KEMTA); Maastricht University; Maastricht the Netherlands
3. Department of Obstetrics and Gynecology; The Robinson Research Institute; University of Adelaide; Adelaide South Australia Australia
4. Department of Obstetrics and Gynecology; Zuyderland Medical Center; Sittard the Netherlands
5. Department of Obstetrics and Gynecology; Hospital Rijnstate; Arnhem the Netherlands
6. Department of Obstetrics and Gynecology; Elkerliek Hospital; Helmond the Netherlands
7. Department of Obstetrics and Gynecology; Sint Jans Gasthuis; Weert the Netherlands
8. Department of Obstetrics and Gynecology; Groningen University Medical Center; Groningen the Netherlands
9. Department of Obstetrics and Gynecology; Röpcke-Zweers Hospital; Hardenberg the Netherlands
10. Department of Obstetrics and Gynecology; Flevo Hospital; Almere the Netherlands
11. Department of Obstetrics and Gynecology; Catharina Hospital; Eindhoven the Netherlands
12. Department of Obstetrics and Gynecology; University Medical Center Utrecht; Utrecht the Netherlands
13. Department of Obstetrics and Gynecology; Zuyderland Medical Center; Heerlen the Netherlands
14. Department of Obstetrics and Gynecology; IJsselland Hospital; Capelle aan den IJssel the Netherlands
15. Department of Obstetrics and Gynecology; ZiekenhuisGroep Twente; Almelo the Netherlands
16. Caphri School for Public Health and Primary Care; Maastricht University; Maastricht the Netherlands
17. Department of Obstetrics and Gynecology; Tergooi Hospital; Hilversum the Netherlands
18. Department of Obstetrics and Gynecology; Radboud University Nijmegen Medical Center; Nijmegen the Netherlands
19. Scientific Institute for Quality of Healthcare (IQ healthcare); Radboud University Nijmegen Medical Center; Nijmegen the Netherlands