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Vaccaro CM, Fellner AN, Pauls RN.Vaccaro CM, et al.Eur J Obstet Gynecol Reprod Biol. 2014 Sep;180:180-5. doi: 10.1016/j.ejogrb.2014.02.024. Epub 2014 Feb 20.Eur J Obstet Gynecol Reprod Biol. 2014.PMID: 24630291