Khan, Ghufranullah, and Sulaiman B Hassan. “Sequential Internal Mammary Artery Grafting Extended Use of a Superior Coronary Bypass Conduit Is It Safe”. Journal of Postgraduate Medical Institute 11, no. 2 (September 6, 2011). Accessed April 27, 2024. https://jpmi.org.pk/index.php/jpmi/article/view/579.