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Miller ES, Hahn K, Grobman WA; Society for Maternal-Fetal Medicine Health Policy Committee.Miller ES, et al. Among authors: grobman wa.Obstet Gynecol. 2013 Apr;121(4):789-797. doi: 10.1097/AOG.0b013e3182878b43.Obstet Gynecol. 2013.PMID: 23635679