ARYAL, U. R. Tobacco smoking and COVID-19 infections: A summary of facts from scientific literature. Journal of Kathmandu Medical College, [S. l.], v. 9, n. 4, p. 219–223, 2020. DOI: 10.3126/jkmc.v9i4.38098. Disponível em: https://www.nepjol.info/index.php/JKMC/article/view/38098. Acesso em: 22 oct. 2021.