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Dittmer KE, Thompson KG.Dittmer KE, et al. Among authors: thompson kg.J Am Vet Med Assoc. 2009 Oct 1;235(7):817; author reply 817. doi: 10.2460/javma.235.7.817.J Am Vet Med Assoc. 2009.PMID: 19793008Free article.No abstract available.