title: BCG vaccination and leukemia mortality.
mesh_terms: D001741:Black or African American; D001500:BCG Vaccine / Q000627:therapeutic use; D002641:Chicago; D002648:Child; D006801:Humans; D007938:Leukemia / Q000276:immunology* / Q000401:mortality / Q000628:therapy; D009163:Mycobacterium bovis / Q000276:immunology; D012189:Retrospective Studies
chemical_list: D001500:BCG Vaccine