U. U, E. O.A, O. J.I., O. P.C., and N. O.L., “Evaluation Of Cardiac Sizes Of Normal Nigerians Using Posteroanterior Chest Radiographs: Evaluation Of Cardiac Sizes Of Normal Nigerians Using Radiographs”, Natl J Integr Res Med, vol. 3, no. 3, pp. 112–117, Aug. 2012.