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Issa BA, Yussuf AD, Olanrewaju GT, Abiodun OA.Issa BA, et al. Among authors: yussuf ad.Pan Afr Med J. 2014 Oct 21;19:178. doi: 10.11604/pamj.2014.19.178.3642. eCollection 2014.Pan Afr Med J. 2014.PMID: 25815099Free PMC article.