B.O. Nwankwo and E. Ogueri
International Journal of Tropical Medicine 1 ( 4 ): 140 - 144 , 2006
A.N. Amadi, B.O. Nwankwo, A.I. Ibe, U.M. Chukwuocha, K.S. Nwoga, N.C. Oguejiofor and G.U.P. Iloh
Pakistan Journal of Social Sciences 6 ( 1 ): 32 - 35 , 2009