A cohort study of mortality in relation to lung function.
D004812:Epidemiologic Methods; D005500:Follow-Up Studies; D006801:Humans; D007221:Industry; D008297:Male; D009784:Occupational Diseases / Q000453:epidemiology*; D012120:Respiration Disorders / Q000453:epidemiology* / Q000401:mortality; D013232:Steel; D014852:Wales
D013232:Steel