title: Routine sigmoidoscopy costs and usefulness.
mesh_terms: D003110:Colonic Neoplasms / Q000175:diagnosis; D003365:Costs and Cost Analysis; D006801:Humans; D009362:Neoplasm Metastasis / Q000517:prevention & control; D012004:Rectal Neoplasms / Q000175:diagnosis; D012812:Sigmoidoscopy