[History and progress of endoscopy for the lower intestine--proctoscopy, sigmoidocamera and fibercolonoscopy].
D003106:Colon; D012809:Colon, Sigmoid; D019723:Endoscopes; D004724:Endoscopy / Q000379:methods; D005336:Fiber Optic Technology / Q000295:instrumentation*; D006801:Humans; D020700:Proctoscopes; D011351:Proctoscopy / Q000379:methods