The design of a study to assess occult-blood screening for colon cancer.
D000368:Aged; D003110:Colonic Neoplasms / Q000175:diagnosis / Q000401:mortality / Q000517:prevention & control*; D005260:Female; D006801:Humans; D008297:Male; D008403:Mass Screening; D008875:Middle Aged; D008910:Minnesota; D009780:Occult Blood