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Paweska JT, Smith SJ, Wright IM, Williams R, Cohen AS, Van Dijk AA, Grobbelaar AA, Croft JE, Swanepoel R, Gerdes GH.Paweska JT, et al.Onderstepoort J Vet Res. 2003 Mar;70(1):49-64.Onderstepoort J Vet Res. 2003.PMID: 12825681