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Hofmeister EH, Egger CM, Keenan K.Hofmeister EH, et al.J Am Vet Med Assoc. 2004 Jan 15;224(2):209-11. doi: 10.2460/javma.2004.224.209.J Am Vet Med Assoc. 2004.PMID: 14736064Free article.No abstract available.
Hofmeister EH, Egger CM.Hofmeister EH, et al.J Am Vet Med Assoc. 2005 Apr 1;226(7):1092-4. doi: 10.2460/javma.2005.226.1092.J Am Vet Med Assoc. 2005.PMID: 15825733Free article.Clinical Trial.