U.W. Ibor, G.O. Aigbe, A.I. Iwara, O.E. Okongor and I.I. Okino
Journal of Medical Sciences 12 ( 7 ): 198 - 206 , 2012
A.I. Iwara, F.O. Ogundele, U.W. Ibor, V.M. Arrey and O.E. Okongor
Research Journal of Applied Sciences 6 ( 4 ): 276 - 281 , 2011