Q. Y. Song and M. J. N. Ling, “COVID-19 Pandemic: An Unseen’s Evolution War”, J. Lumbini Med. Coll., vol. 8, no. 1, pp. 138–141, May 2020, Accessed: Jul. 19, 2026. [Online]. Available: https://nepjol.info/index.php/JLMC/article/view/40761