Zahoor Ahmad Khan, Javaidullah Khan, Hameedullah, Salman Ahmad. “Frequency of Left Ventricular Mechanical Dyssynchrony in Chronic Heart Failure”. Pakistan Journal of Medical & Health Sciences 17, no. 01 (March 10, 2023): 628. Accessed September 27, 2024. https://pjmhsonline.com/index.php/pjmhs/article/view/4104.