Relationship between QRS duration on ECG and Left Ventricular Systolic Function by Echocardiography in patients with Non-ST elevated Myocardial Infarction. Cardiovasc. j. [Internet]. 2022 Oct. 10 [cited 2026 Jul. 2];15(1):36-41. Available from: https://www.banglajol.info/index.php/CARDIO/article/view/61908