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Ben-Shachar I, Pavelka J, Cohn DE, Copeland LJ, Ramirez N, Manolitsas T, Fowler JM.Ben-Shachar I, et al. Among authors: copeland lj.Obstet Gynecol. 2005 Mar;105(3):487-93. doi: 10.1097/01.AOG.0000149151.74863.c4.Obstet Gynecol. 2005.PMID: 15738013