title: Changes in atopy over 25 years: allergy epidemic has spread to old age.
authors.forename: Allan
authors.initials: A
authors.lastname: Linneberg
mesh_terms: D000293:Adolescent; D000328:Adult; D017677:Age Distribution; D000368:Aged; D015331:Cohort Studies; D003718:Denmark / Q000453:epidemiology; D006801:Humans; D006969:Hypersensitivity, Immediate / Q000453:epidemiology*; D008875:Middle Aged; D015995:Prevalence; D012130:Respiratory Hypersensitivity / Q000453:epidemiology