mran Ellahi Soomro, Qurban Ali Rahu, Khalid Naseeb. (2014). Frequency of Left Ventricular Systolic Dysfunction in Patients with Unstable Angina. Journal of Peoples University of Medical &Amp; Health Sciences Nawabshah. (JPUMHS), 4(4), 223–228. Retrieved from http://publication.pumhs.edu.pk/index.php/ojs/article/view/164