U, Ukoha, Egwu O.A, Okafor J.I., Ogugua P.C., and Nwokebu O.L. 2012. “Evaluation Of Cardiac Sizes Of Normal Nigerians Using Posteroanterior Chest Radiographs: Evaluation Of Cardiac Sizes Of Normal Nigerians Using Radiographs”. National Journal of Integrated Research in Medicine 3 (3):112-17. https://doi.org/10.70284/njirm.v3i3.2049.