Ahmed, Iftikhar, Asif Nadeem, Nazish Saeed, Syed Ali Shiram, Zahid Hussain, Muhammad Naeem Tariq, Javeria Kamran, Attiya Mustafa, Naseem Azad, and Syed Khurram Shahzad. “Comparison of Left Ventricular Ejection Fraction in Heart Failure Patients on Echocardiography, Cardiac Magnetic Resonance Imaging and Single Photon Emission Computed Tomography”. Pakistan Armed Forces Medical Journal 72, no. SUPPL-3 (November 22, 2022): S461–66. Accessed August 12, 2024. https://pafmj.org/PAFMJ/article/view/9534.