title: Oat cell lung cancer in selected occupations: a case-control study.
mesh_terms: D018288:Carcinoma, Small Cell / Q000209:etiology* / Q000401:mortality; D006801:Humans; D008175:Lung Neoplasms / Q000209:etiology* / Q000401:mortality; D008297:Male; D008404:Massachusetts; D008875:Middle Aged; D009784:Occupational Diseases / Q000209:etiology*; D012042:Registries; D014186:Transportation