[1]
R. Abraham, H. L. Karamanoukian, M. R. Jajkowski, G. D’Ancona, T. A. Salerno, and J. Bergsland, “Low Ejection Fraction Is Not a Contraindication to Off-Pump Coronary Artery Surgery”, HSF, vol. 4, no. 2, pp. E141-E146, Jun. 2001.