Shakeel Ahmad, Naeem Asghar, and Athar Rauf. “VEIN GRAFT PATENCY IN POST-CABG SYMPTOMATIC PATIENTS: AN ANGIOGRAPHIC STUDY”. Journal of University Medical & Dental College, Vol. 6, no. 3, Sept. 2015, pp. 38-45, http://jumdc.com/index.php/jumdc/article/view/243.