M. U. . Ahmed, S. . Hossain, M. S. . Alam, M. S. . Parvez, D. . Debnath, and M. M. . Rahman Khan, “Pattern and Extent of Coronary Artery Disease in Patients of Ischemic Heart Disease aged 40 Years or less”, Cardiovasc. j., vol. 14, no. 2, pp. 103–110, Apr. 2022.