Investigation of mortality. Mortality of males from cancer of three sites in seven cities.
D000293:Adolescent; D000328:Adult; D000368:Aged; D002489:Central America; D004739:England; D006801:Humans; D007822:Laryngeal Neoplasms / Q000401:mortality*; D008175:Lung Neoplasms / Q000401:mortality*; D008297:Male; D008875:Middle Aged; D013020:South America; D014481:United States; D001749:Urinary Bladder Neoplasms / Q000401:mortality*