Maha Qasim. (2022). Susceptibility of SARS-CoV-2 COVID-19 Infection among Smokers/Tobacco Users Upregulating the Expression of Angiotensin-Converting Enzyme-2 (ACE2). Perspective of Recent Advances in Medical Research Vol. 2, 128–133. https://doi.org/10.9734/bpi/pramr/v2/4385A