Khan, Riaz Anwar, Sohail Aslam, Abdul Malik, Abid Aslam Awan, Khalid Rehman, Hamid Ahmad, Taskeen Ahmad, et al. 2011. “Myocardial Protection: A Clinical Comparison of Cold Blood Cardioplegia and Cold Crystalloid Cardioplegia”. Journal of Postgraduate Medical Institute 19 (3). https://www.jpmi.org.pk/index.php/jpmi/article/view/978.