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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
U.W. Ibor, O.A. Anjorin, A.E. Ita, M.A. Otu and T.I. Bassey
Trends in Medical Research 6 ( 4 ): 273 - 280 , 2011