American Journal of Obstetrics and GynecologyVolume 216, Issue 6, June 2017, Page 615CorrectionMarch 2017 (vol. 216, no. 3, page 250)Author links open overlay panelShow moreShareCitehttps://doi.org/10.1016/j.ajog.2017.04.037Previous article in issueNext article in issueRecommended articlesCited by (0)View Abstract