About the Authors

Marisja Scheerhagen

Affiliation Erasmus Medical Centre, Department of Obstetrics and Gynaecology, Division of Obstetrics and Prenatal Medicine, Rotterdam, The Netherlands

Henk F. van Stel

H.vanStel@umcutrecht.nl

Affiliation University Medical Center Utrecht, Julius Center for Health Sciences and Primary Care, Department of Health Technology Assessment, Utrecht, The Netherlands

Erwin Birnie

Affiliation Institute of Health Policy and Management, Erasmus University Rotterdam, Rotterdam, The Netherlands

Arie Franx

Affiliation University Medical Center Utrecht, Division Women and Baby, Department of Obstetrics, Utrecht, The Netherlands

Gouke J. Bonsel

Affiliation Erasmus Medical Centre, Department of Obstetrics and Gynaecology, Division of Obstetrics and Prenatal Medicine, Rotterdam, The Netherlands

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: MS HFVS EB AF GJB. Performed the experiments: MS HFVS EB GJB. Analyzed the data: MS HFVS EB GJB. Wrote the paper: MS HFVS EB AF GJB.