Chhenzom, Kuenzang. “Emerging Infectious Disease: Coronavirus Disease of 2019 (COVID- 19): What We Know and What Remains to Be Known?”. Bhutan Health Journal 6, no. 1 (June 4, 2021): I-II. Accessed May 5, 2024. https://www.bhj.com.bt/index.php/bhj/article/view/92.