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Akpan OU, Bassey RB, Agba BS, Edegha IA.Akpan OU, et al. Among authors: bassey rb.Niger Med J. 2014 Jan;55(1):34-8. doi: 10.4103/0300-1652.128157.Niger Med J. 2014.PMID: 24970967Free PMC article.