Prevalence, Severity and Mortality associated with COPD and Smoking in patients with COVID-19: A Rapid Systematic Review and Meta-Analysis.
PLoS One. 2020 May 11;15(5):e0233147. doi: 10.1371/journal.pone.0233147. eCollection 2020.
PLoS One. 2020.
PMID: 32392262
Free PMC article.