Oesophagoscopy: clinical experience with a fibre-optic oesophagoscope.
D000328:Adult; D000368:Aged; D020701:Esophagoscopes; D004945:Esophagoscopy / Q000266:history; D005260:Female; D049672:History, 19th Century; D049673:History, 20th Century; D006801:Humans; D008297:Male; D008722:Methods; D008875:Middle Aged