Screening for colorectal cancer.
D000328:Adult; D000367:Age Factors; D001466:Barium Sulfate; D003110:Colonic Neoplasms / Q000453:epidemiology*; D006801:Humans; D008403:Mass Screening; D008875:Middle Aged; D009780:Occult Blood; D010173:Palpation; D012004:Rectal Neoplasms / Q000453:epidemiology*; D012812:Sigmoidoscopy; D014481:United States
D001466:Barium Sulfate