title: The investigation of brain tumor occurrence in other occupational groups: introduction.
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D001194:Asbestos; D001932:Brain Neoplasms / Q000209:etiology / Q000401:mortality*; D002170:Canada; D006801:Humans; D008297:Male; D008875:Middle Aged; D009784:Occupational Diseases / Q000209:etiology / Q000401:mortality*; D014481:United States
chemical_list: D001194:Asbestos