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Fischer-Brown A, Crooks A, Leonard S, Monson R, Northey D, Rutledge JJ.Fischer-Brown A, et al.Anim Reprod Sci. 2005 Jul;87(3-4):215-28. doi: 10.1016/j.anireprosci.2004.12.003.Anim Reprod Sci. 2005.PMID: 15911172