S A Ufelle ; E O Ukaejiofo ; P U Achukwu... http://www.ijmhdev.com/article.asp?issn=2635-3695;year=2010;volume=15;issue=2;spage=53;epage=56;aulast=Ufelle;type=0.
,
2010
D C Nwachukwu ; F E Ejezie ; A A Eze.. http://www.ijmhdev.com/article.asp?issn=2635-3695;year=2009;volume=14;issue=1;spage=84;epage=89;aulast=Nwachukwu;type=0.
,
2009
C N Okwuosa ; P U Achukwu ; D C Nwachukwu.. http://www.ijmhdev.com/article.asp?issn=2635-3695;year=2009;volume=14;issue=1;spage=6;epage=13;aulast=Okwuosa;type=0.
,
2009
P M Ofordile ; P U Achukwu ; A A Ngokere. http://www.ijmhdev.com/article.asp?issn=2635-3695;year=2003;volume=8;issue=1;spage=16;epage=19;aulast=Ofordile;type=0.
,
2003