Yari, Saeed, and Hanns Moshammer. “The Effect of Ambient Air Pollution on Severity of COVID19: Hospitalisation and Death”. Asian Pacific Journal of Environment and Cancer 3, no. 1 (May 16, 2020): 15-16. Accessed March 29, 2024. http://waocp.com/journal/index.php/apjec/article/view/400.