Kumar, Vasanth, Umesh Yadav, Awan Kumar, and - Vijaylakhsmi. 2022. “The Mechanical Heart Valve TTK Chitra Is Inexpensive and of Proven Effectiveness (widely Used in India and Then in Nepal)”. Medical Journal of Eastern Nepal 1 (1):49-52. https://doi.org/10.3126/mjen.v1i1.45864.