title: Changes in asthma prevalence.
authors.forename: E A
authors.initials: EA
authors.lastname: Mitchell
authors.forename: H R
authors.initials: HR
authors.lastname: Anderson
mesh_terms: D001249:Asthma / Q000453:epidemiology*; D002648:Child; D006801:Humans; D015995:Prevalence; D012135:Respiratory Sounds; D006113:United Kingdom / Q000453:epidemiology