Upper gastrointestinal endoscopy in the aged.
D000368:Aged; D004724:Endoscopy / Q000379:methods; D005260:Female; D005767:Gastrointestinal Diseases / Q000175:diagnosis* / Q000000981:diagnostic imaging; D005773:Gastroscopy / Q000379:methods; D006801:Humans; D008297:Male; D011859:Radiography