About the Authors

Eva van der Meij

ev.vandermeij@vumc.nl.

Affiliations Department of Obstetrics and Gynaecology, VU University Medical Center, Amsterdam, The Netherlands, EMGO Institute for Health and Care Research, VU University Medical Center, Amsterdam, The Netherlands

Johannes R. Anema

Affiliation EMGO Institute for Health and Care Research, VU University Medical Center, Amsterdam, The Netherlands

René H. J. Otten

Affiliation Medical Library, Vrije Universiteit, Amsterdam, The Netherlands

Judith A. F. Huirne

Affiliation Department of Obstetrics and Gynaecology, VU University Medical Center, Amsterdam, The Netherlands

Frederieke G. Schaafsma

Affiliation EMGO Institute for Health and Care Research, VU University Medical Center, Amsterdam, The Netherlands

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: EM FS JA JH RO. Performed the experiments: EM FS. Analyzed the data: EM FS. Wrote the paper: EM FS JA JH RO. Performed the literature search: EM RO. Was consulted when there was disagreement about the in- or exclusion of publications: JA.