The cancer problem.
D000293:Adolescent; D000328:Adult; D000367:Age Factors; D000368:Aged; D004777:Environment; D004781:Environmental Exposure; D006801:Humans; D008875:Middle Aged; D009154:Mutation; D009369:Neoplasms / Q000209:etiology* / Q000276:immunology / Q000401:mortality