title: A case-control method for assessing environmental risks from multiple industrial point sources.
mesh_terms: D000393:Air Pollutants / Q000506:poisoning*; D004812:Epidemiologic Methods; D006801:Humans; D007221:Industry; D008113:Liver Neoplasms / Q000209:etiology / Q000401:mortality*; D008962:Models, Theoretical; D013781:Texas; D014505:Urban Population
chemical_list: D000393:Air Pollutants