Upper gastrointestinal endoscopy in the elderly.
D000368:Aged; D001466:Barium Sulfate; D004381:Duodenal Ulcer / Q000175:diagnosis; D004724:Endoscopy; D004935:Esophageal Diseases / Q000175:diagnosis*; D005260:Female; D006801:Humans; D008297:Male; D013272:Stomach Diseases / Q000175:diagnosis*; D013274:Stomach Neoplasms / Q000175:diagnosis
D001466:Barium Sulfate