Effect of outdoor air pollution on asthma exacerbations in children and adults: Systematic review and multilevel meta-analysis.
PLoS One. 2017 Mar 20;12(3):e0174050. doi: 10.1371/journal.pone.0174050. eCollection 2017.
PLoS One. 2017.
PMID: 28319180
Free PMC article.
Review.