N. Ali, R. Masroor, M. A. Iqbal, S. M. Hasan Kirmani, H. Khurshid, and M. A. Akram, “Five Year Experience of Mitral Valve Repair Surgery at Armed Force Institute of Cardiology”, PAFMJ, vol. 72, no. SUPPL-3, pp. S556–60, Nov. 2022.