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Mahnert N, Roberts SW, Laibl VR, Sheffield JS, Wendel GD Jr.Mahnert N, et al. Among authors: roberts sw.Am J Obstet Gynecol. 2007 May;196(5):e55-6. doi: 10.1016/j.ajog.2006.10.911.Am J Obstet Gynecol. 2007.PMID: 17466681