[1] Academic Medical Centre,Department of Obstetrics and Gynaecology
[2] Academic Medical Centre,Department of Clinical Epidemiology, Biostatistics and Bioinformatics
[3] Onze Lieve Vrouwe Gasthuis,Department of Obstetrics and Gynaecology
[4] Academic Medical Centre,Dutch Cochrane Centre
[5] Leiden University Medical Center,Department of Obstetrics
[6] VU Medical Center,Department of Obstetrics and Gynaecology
[7] University Medical Center Utrecht,Department of Obstetrics and Gynaecology
[8] Radboud University Medical Center,Department of Obstetrics and Gynaecology
[9] Erasmus University Medical Center,Department of Obstetrics and Gynaecology
[10] Maastricht University Medical Center,Department of Obstetrics and Gynaecology
[11] University Medical Center Groninngen,Department of Obstetrics and Gynaecology
[12] Maxima Medical Center,Department of Obstetrics and Gynaecology
[13] Isala Clinics,Department of Obstetrics and Gynaecology
[14] Hospital Group Twente,Department of Perinatology and Gynaecology