Published on in Vol 8, No 10 (2020): October
Preprints (earlier versions) of this paper are
available at
https://preprints.jmir.org/preprint/18966, first published
.

1 Department of Obstetrics, University Medical Center, Utrecht University, Utrecht, The Netherlands
2 Department of Obstetrics and Gynaecology, Erasmus Medical Center, Erasmus University, Rotterdam, The Netherlands