title: Is asthma really changing?
authors.affiliation: Department of Respiratory Medicine, Children's Hospital, Camperdown, New South Wales, Australia.
authors.forename: P P
authors.initials: PP
authors.lastname: Van Asperen
mesh_terms: D001249:Asthma / Q000453:epidemiology* / Q000401:mortality; D001315:Australia; D002648:Child; D006760:Hospitalization; D006801:Humans; D009520:New Zealand