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Flisser E, Grifo JA.Flisser E, et al. Among authors: grifo ja.Fertil Steril. 2007 Jan;87(1):1-5. doi: 10.1016/j.fertnstert.2006.06.017. Epub 2006 Nov 13.Fertil Steril. 2007.PMID: 17094986Free article.Review.