Respiratory illness in British schoolchildren and atmospheric smoke and sulphur dioxide.
D002648:Child; D006801:Humans; D012120:Respiration Disorders / Q000209:etiology*; D012906:Smoke / Q000009:adverse effects*; D013458:Sulfur Dioxide / Q000009:adverse effects*; D006113:United Kingdom
D012906:Smoke; D013458:Sulfur Dioxide