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Stewart RD, Nelson DB, Matulevicius SA, Morgan JL, McIntire DD, Drazner MH, Cunningham FG.Stewart RD, et al. Among authors: nelson db.Am J Obstet Gynecol. 2016 May;214(5):640.e1-6. doi: 10.1016/j.ajog.2015.11.014. Epub 2015 Nov 22.Am J Obstet Gynecol. 2016.PMID: 26611998