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Francis AH, Martin LG, Haldorson GJ, Lahmers KK, Luther TY, Alperin DC, Hines SA.Francis AH, et al. Among authors: lahmers kk.J Am Vet Med Assoc. 2007 Mar 15;230(6):873-9. doi: 10.2460/javma.230.6.873.J Am Vet Med Assoc. 2007.PMID: 17362162Free article.