Adil, M., M. Hafizullah, H. Jan, M. M. Paracha, and S. Qazi. “DIAGNOSTIC YIELD OF STRESS ECHOCARDIOGRAPHY IN CORONARY ARTERY DISEASE PATIENTS”. Journal of Postgraduate Medical Institute, vol. 25, no. 4, Dec. 2011, https://www.jpmi.org.pk/index.php/jpmi/article/view/1141.