U.E. Dibua, O.J. Awagu and C.O. Esimone
International Journal of Tropical Medicine 2 ( 2 ): 33 - 40 , 2007
C.O. Esimone, C.O. Okoli and C.O. Ayogu
International Journal of Tropical Medicine 2 ( 2 ): 63 - 67 , 2007