title: Flexible sigmoidoscopy: a potential advance in cancer control.
mesh_terms: D000328:Adult; D000368:Aged; D003110:Colonic Neoplasms / Q000175:diagnosis* / Q000517:prevention & control; D005336:Fiber Optic Technology; D006801:Humans; D008403:Mass Screening; D008875:Middle Aged; D012812:Sigmoidoscopy / Q000379:methods