Khan, S., M. Asghar Khan, M. N. Khan, I. Shah, and M. ul Hassan. “Comparison of Risk Factors Profile in Patients Below and Above Forty Years of Age Presenting With Acute Myocardial Infarction”. Journal of Postgraduate Medical Institute, vol. 27, no. 4, Oct. 2013, https://jpmi.org.pk/index.php/jpmi/article/view/1484.