Nwaejike, Nnamdi, Gianfranco Campalani, Dennis Gladstone, and O. C. Nzewi. 2009. “Benefits of the Preemptive Intra-Aortic Balloon Pump: An Audit of Practice in a Regional Cardiothoracic Center”. The Heart Surgery Forum 12 (2):E70-E74. https://doi.org/10.1532/HSF98.20091009.