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Bwala DG, Abolnik C, van Wyk A, Cornelius E, Bisschop SP.Bwala DG, et al. Among authors: abolnik c.J S Afr Vet Assoc. 2009 Sep;80(3):174-8. doi: 10.4102/jsava.v80i3.197.J S Afr Vet Assoc. 2009.PMID: 20169751