title: Up in the air.
authors.forename: M
authors.initials: M
authors.lastname: Day
mesh_terms: D000293:Adolescent; D000397:Air Pollution; D001249:Asthma / Q000453:epidemiology* / Q000209:etiology / Q000523:psychology; D002648:Child; D005260:Female; D006801:Humans; D008297:Male