Koirala, B., R. Koirala, J. Sharma, S. Pradhan, A. Acharya, P. Sharma, and K. Rai. “Rheumatic Valvular Lesions: Surgical Interventions”. Nepalese Heart Journal, vol. 3, no. 3, Nov. 2004, pp. 68-69, doi:10.3126/njh.v3i3.26134.