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The prevalence and socio-demographic characteristics of per..:

O C Ekwueme ; U E Ezeoke ; U Mgbeokwere
http://www.ijmhdev.com/article.asp?issn=2635-3695;year=2009;volume=14;issue=2;spage=22;epage=28;aulast=Ekwueme;type=0.  , 2009