Gastrointestinal endoscopy in Siriraj Hospital, Bangkok, Thailand.
D004386:Duodenum; D019723:Endoscopes; D005336:Fiber Optic Technology / Q000295:instrumentation; D020699:Gastroscopes; D005773:Gastroscopy / Q000266:history; D049673:History, 20th Century; D006801:Humans; D013785:Thailand