title: Why does asthma become persistent?
authors.forename: P J
authors.initials: PJ
authors.lastname: Barnes
authors.forename: F W
authors.initials: FW
authors.lastname: Liew
mesh_terms: D000293:Adolescent; D000328:Adult; D001249:Asthma / Q000209:etiology* / Q000276:immunology / Q000503:physiopathology; D002908:Chronic Disease; D006801:Humans; D008168:Lung / Q000276:immunology / Q000503:physiopathology; D012130:Respiratory Hypersensitivity / Q000150:complications / Q000276:immunology / Q000503:physiopathology