Proctosigmoidoscopy in private practice.
D000367:Age Factors; D000368:Aged; D003110:Colonic Neoplasms / Q000175:diagnosis*; D005069:Evaluation Studies as Topic; D006801:Humans; D008875:Middle Aged; D011331:Private Practice; D012004:Rectal Neoplasms / Q000175:diagnosis*; D020694:Sigmoidoscopes; D012812:Sigmoidoscopy