B. K. . Sheel, M. . Badiuzzaman, T. . Haque, H. . Rahman, A. K. . Biswas, and S. R. . Khan, “Association between Myocardial Performance Index (Tei- Index) and Severity of Coronary Artery Disease in Patients with Non-ST Segment Elevation Acute Coronary Syndrome”, Bangladesh Heart J, vol. 37, no. 1, pp. 16–26, Jun. 2022.