title: Superiority of the flexible to the rigid sigmoidoscope in routine proctosigmoidoscopy.
mesh_terms: D000328:Adult; D000368:Aged; D003108:Colonic Diseases / Q000175:diagnosis; D003110:Colonic Neoplasms / Q000175:diagnosis; D005069:Evaluation Studies as Topic; D005260:Female; D005336:Fiber Optic Technology; D006801:Humans; D007417:Intestinal Polyps / Q000175:diagnosis; D008297:Male; D008875:Middle Aged; D012002:Rectal Diseases / Q000175:diagnosis; D012004:Rectal Neoplasms / Q000175:diagnosis; D020694:Sigmoidoscopes