The case-referent (case-control) study in occupational health epidemiology.
D000328:Adult; D000368:Aged; D002318:Cardiovascular Diseases / Q000453:epidemiology; D004781:Environmental Exposure; D004812:Epidemiologic Methods; D006801:Humans; D008875:Middle Aged; D009369:Neoplasms / Q000453:epidemiology; D009784:Occupational Diseases / Q000453:epidemiology*; D012907:Smoking