Some epidemiological data on lung cancer in the USSR.
D000328:Adult; D000368:Aged; D005260:Female; D006801:Humans; D008175:Lung Neoplasms / Q000453:epidemiology* / Q000401:mortality; D008297:Male; D008875:Middle Aged; D012424:Rural Population; D012737:Sex Factors; D012907:Smoking / Q000150:complications; D014171:Transients and Migrants; D014586:USSR; D014505:Urban Population