Tobacco smoking confers risk for severe COVID-19 unexplainable by pulmonary imaging.
J LiX LongQ ZhangX FangN LiB FedorovaS HuJh LiN XiongZhicheng LinPublished in: Journal of internal medicine (2020)
Tobacco smoking history increases the risk for great severity of COVID-19 but this risk is achieved unlikely by affecting the lungs.