Long-term mortality study of steelworkers. I. Methodology.
D000328:Adult; D000368:Aged; D000497:Alloys; D005006:Ethnicity; D005500:Follow-Up Studies; D006801:Humans; D008297:Male; D008875:Middle Aged; D009784:Occupational Diseases / Q000401:mortality*
D000497:Alloys