title: [Atopic diseases].
authors.forename: P
authors.initials: P
authors.lastname: Nafstad
mesh_terms: D004781:Environmental Exposure / Q000009:adverse effects; D006801:Humans; D006920:Hygiene; D006969:Hypersensitivity, Immediate / Q000453:epidemiology / Q000209:etiology / Q000276:immunology