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Imboden M, Schaefer DA, Bremel RD, Homan EJ, Riggs MW.Imboden M, et al. Among authors: bremel rd.Vet Parasitol. 2012 Aug 13;188(1-2):41-7. doi: 10.1016/j.vetpar.2012.02.014. Epub 2012 Mar 6.Vet Parasitol. 2012.PMID: 22455725Free PMC article.Clinical Trial.