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Peña O, Palumbo A, González-Fernández R, Hernández J, Naftolin F, Avila J.Peña O, et al. Among authors: avila j.Fertil Steril. 2010 Mar 15;93(5):1601-8. doi: 10.1016/j.fertnstert.2009.03.092. Epub 2009 Jun 12.Fertil Steril. 2010.PMID: 19524223Free article.