title: Role of outdoor aeroallergens in asthma exacerbations: epidemiological evidence.
authors.forename: R W
authors.initials: RW
authors.lastname: Atkinson
authors.forename: D P
authors.initials: DP
authors.lastname: Strachan
mesh_terms: D000393:Air Pollutants / Q000009:adverse effects*; D000485:Allergens / Q000009:adverse effects*; D001249:Asthma / Q000453:epidemiology / Q000209:etiology*; D006801:Humans; D011058:Pollen / Q000009:adverse effects; D014887:Weather
chemical_list: D000393:Air Pollutants; D000485:Allergens