The effect of atmospheric sulfur dioxide on croup syndrome. Computer analysis.
D000397:Air Pollution / Q000032:analysis*; D002675:Child, Preschool; D002980:Climate; D004391:Dust / Q000032:analysis; D005860:Germany, West; D006801:Humans; D007223:Infant; D007827:Laryngitis / Q000453:epidemiology / Q000209:etiology*; D013458:Sulfur Dioxide / Q000032:analysis*
D004391:Dust; D013458:Sulfur Dioxide