Watase M, Masaki K, Chubachi S, Namkoong H, et al. Impact of accumulative smoking exposure and chronic obstructive pulmonary disease
on COVID-19 outcomes: Report based on findings from the Japan COVID-19 Task
Force. Int J Infect Dis 2022 Dec 20:S1201-9712(22)00655.
PMID: 36563958