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Paiano RB, Birgel DB, Birgel Junior EH.Paiano RB, et al.J S Afr Vet Assoc. 2020 Jun 17;91(0):e1-e6. doi: 10.4102/jsava.v91i0.1975.J S Afr Vet Assoc. 2020.PMID: 32633985Free PMC article.