Screening for colorectal cancer.
Bolin
T D
TD
D003110:Colonic Neoplasms / Q000517:prevention & control*; D003113:Colonoscopy; D006801:Humans; D008403:Mass Screening / Q000379:methods*; D008875:Middle Aged; D012004:Rectal Neoplasms / Q000517:prevention & control*; D012812:Sigmoidoscopy