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Todhunter DA, Smith KL, Hogan JS.Todhunter DA, et al. Among authors: hogan js.J Dairy Sci. 1991 Jun;74(6):1860-5. doi: 10.3168/jds.S0022-0302(91)78351-3.J Dairy Sci. 1991.PMID: 1894795Free article.