Aziz, Kalim Uddin, A.D. Memon, and S.A. Syed. “M - Mode Echocardiographic Experience in Congenital Heart Disease at NICVD”. Pakistan Heart Journal 15, no. 2 (October 11, 2012). Accessed November 24, 2024. https://pakheartjournal1.pcs.org.pk/index.php/pk/article/view/452.