Khan, Ameer Ullah, et al. “The ASSOCIATION OF DEMOGRAPHIC VARIABLES WITH EARLY RECOVERY AFTER CORONARY ARTERY BYPASS GRAFTING AT CARDIAC CARE PUBLIC HOSPITAL, KARACHI”. Journal of Liaquat University of Medical & Health Sciences, vol. 20, no. 02, July 2021, pp. 116-21, http://ojs.lumhs.edu.pk/index.php/jlumhs/article/view/473.