title: The Hamilton study: distribution of factors confounding the relationship between air quality and respiratory health.
mesh_terms: D000393:Air Pollutants / Q000032:analysis*; D002648:Child; D006304:Health Status; D006801:Humans; D009864:Ontario; D012140:Respiratory Tract Diseases / Q000453:epidemiology*
chemical_list: D000393:Air Pollutants