title: S-shaped cancer incidence curves do not imply S-shaped risk functions.
mesh_terms: D000328:Adult; D000367:Age Factors; D000368:Aged; D004812:Epidemiologic Methods; D006801:Humans; D008175:Lung Neoplasms / Q000453:epidemiology; D008875:Middle Aged; D009369:Neoplasms / Q000453:epidemiology* / Q000401:mortality; D012306:Risk