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Leclair CM, Zia JK, Doom CM, Morgan TK, Edelman AB.Leclair CM, et al. Among authors: edelman ab.Obstet Gynecol. 2011 Mar;117(3):636-641. doi: 10.1097/AOG.0b013e31820ad45b.Obstet Gynecol. 2011.PMID: 21343767Clinical Trial.