title: Screening for colorectal cancer.
authors.forename: M H
authors.initials: MH
authors.lastname: Vatn
mesh_terms: D003110:Colonic Neoplasms / Q000517:prevention & control*; D003113:Colonoscopy; D006801:Humans; D007417:Intestinal Polyps / Q000175:diagnosis; D008403:Mass Screening / Q000379:methods*; D008875:Middle Aged; D012004:Rectal Neoplasms / Q000517:prevention & control*; D012812:Sigmoidoscopy