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Jiménez E, Pérez-Marín CC, Millán Y, Agüera E.Jiménez E, et al.Anim Reprod Sci. 2011 Feb;123(3-4):265-9. doi: 10.1016/j.anireprosci.2011.01.006. Epub 2011 Jan 14.Anim Reprod Sci. 2011.PMID: 21288668