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Boothe HW, Howe LM, Boothe DM, Reynolds LA, Carpenter M.Boothe HW, et al.J Am Vet Med Assoc. 2010 Mar 15;236(6):657-63. doi: 10.2460/javma.236.6.657.J Am Vet Med Assoc. 2010.PMID: 20225978Free article.