American Journal of Obstetrics and GynecologyVolume 212, Issue 2, February 2015, Page 246CorrectionApril 2012 (vol. 206, no. 4, page 300)Author links open overlay panelShow moreShareCitehttps://doi.org/10.1016/j.ajog.2014.11.016Previous article in issueNext article in issueRecommended articlesCited by (0)View AbstractCopyright © 2015 Published by Mosby, Inc.