Epidemiologic aspects of colorectal cancer in the elderly.
D000367:Age Factors; D000368:Aged; D003110:Colonic Neoplasms / Q000175:diagnosis / Q000453:epidemiology*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D044469:Racial Groups; D012004:Rectal Neoplasms / Q000175:diagnosis / Q000453:epidemiology*; D012737:Sex Factors; D012959:Socioeconomic Factors; D014481:United States