Commentary on the paper: Association of smoking and severity of COVID-19 infection among 5,889 patients in Malaysia: a multi-center observational study, by Ismail N, Hassan N, Hamid MHNA, Yusoff UN, Khamal NR, Omar MA, et al. Published in Int J Infect Dis 2022;116:189-96
Int J Infect Dis. 2022 Aug:121:112.
doi: 10.1016/j.ijid.2022.05.015.
Epub 2022 May 13.