Fibre-endoscopy in gastrointestinal disease. I.--General considerations.
D019723:Endoscopes; D004724:Endoscopy / Q000009:adverse effects; D005336:Fiber Optic Technology / Q000295:instrumentation; D005544:Forecasting; D005767:Gastrointestinal Diseases / Q000175:diagnosis* / Q000628:therapy; D006801:Humans