General decline of cancer incidence in US.
D005260:Female; D006801:Humans; D015994:Incidence; D008297:Male; D008403:Mass Screening; D009026:Mortality / Q000639:trends; D009369:Neoplasms / Q000453:epidemiology*; D012737:Sex Factors; D014481:United States / Q000453:epidemiology