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Cervelló I, Martínez-Conejero JA, Horcajadas JA, Pellicer A, Simón C.Cervelló I, et al.Hum Reprod. 2007 Jan;22(1):45-51. doi: 10.1093/humrep/del332. Epub 2006 Aug 21.Hum Reprod. 2007.PMID: 16923745