Islam, K. N., A. W. Chowdhury, A. H. Khondoker, M. S. Haque, K. Sabah, M. G. Amin, S. R. Kabir, and M. A. D. Saleh. “Effect of Serum Homocysteine on Coronary Artery Disease in Younger and Older Ischaemic Heart Disease Patients”. Cardiovascular Journal, vol. 8, no. 2, Feb. 2016, pp. 138-42, doi:10.3329/cardio.v8i2.26817.