Colorectal cancer screening.
D000570:American Cancer Society; D002487:Centers for Disease Control and Prevention, U.S.; D003110:Colonic Neoplasms / Q000175:diagnosis / Q000517:prevention & control*; D005260:Female; D006266:Health Education; D006801:Humans; D008297:Male; D008403:Mass Screening; D008875:Middle Aged; D012004:Rectal Neoplasms / Q000175:diagnosis / Q000517:prevention & control*; D014481:United States