“Evaluation of left ventricular global function, using Doppler Myocardial Performance Index (Tei- index) in patients with systemic Hypertension”, Univ. Heart J., vol. 4, no. 1, pp. 14–19, Oct. 2008, Accessed: Jul. 01, 2026. [Online]. Available: https://www.banglajol.info/index.php/UHJ/article/view/1389