[Progress in fiberendoscopy of the gastrointestinal tract].
D004724:Endoscopy / Q000266:history*; D004945:Esophagoscopy / Q000266:history; D005336:Fiber Optic Technology; D005773:Gastroscopy / Q000266:history; D049672:History, 19th Century; D049673:History, 20th Century; D006801:Humans; D008722:Methods
Utviklingen av fiberendoskopii gastrointestinaltractus