D. M. N. Khan, D. M. F. I. Malik, D. M. T. Yusuf, D. M. S. Akbar, D. F. A. Butt, and D. S. M. Danyal, “OUTCOMES OF SUCCESSFUL VERSUS UNSUCCESSFUL PERCUTANEOUS CORONARY INTERVENTION IN CHRONIC TOTAL OCCLUSIONS: A TWO YEAR STUDY”, Pak Armed Forces Med J, vol. 69, no. Suppl 1, pp. S138–40, May 2019.