PT  - JOURNAL ARTICLE
AU  - Fuquan Zhang
AU  - Ancha Baranova
TI  - Smoking quantitatively increases risk for COVID-19
AID  - 10.1183/13993003.01273-2021
DP  - 2021 Jan 01
TA  - European Respiratory Journal
PG  - 2101273
4099  - http://erj.ersjournals.com/content/early/2021/07/21/13993003.01273-2021.short
4100  - http://erj.ersjournals.com/content/early/2021/07/21/13993003.01273-2021.full