Asad Khan, Farhat Shireen, Auqib Ghulam Shah, Imran Mehboob Baig, Muhammad Abdul Mateen, Muhammad Shahid 2022. Comparison of Various Techniques for Left Ventricular Ejection Fraction. Pakistan Journal of Medical & Health Sciences. 16, 07 (Sep. 2022), 817. DOI:https://doi.org/10.53350/pjmhs22167817.