Nature of upper gastrointestinal hemorrhage in Chiang Mai University Hospital.
D000293:Adolescent; D000328:Adult; D000368:Aged; D004724:Endoscopy; D005260:Female; D006471:Gastrointestinal Hemorrhage / Q000175:diagnosis / Q000453:epidemiology; D005773:Gastroscopy; D006801:Humans; D008297:Male; D008875:Middle Aged; D013785:Thailand