title: A clinical study of haematemesis and malaena.
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D002648:Child; D004384:Duodenoscopy; D000431:Ethanol / Q000009:adverse effects; D005260:Female; D005773:Gastroscopy; D006396:Hematemesis / Q000150:complications* / Q000453:epidemiology / Q000209:etiology; D006801:Humans; D008297:Male; D008551:Melena / Q000150:complications* / Q000453:epidemiology / Q000209:etiology; D008875:Middle Aged; D011446:Prospective Studies; D015024:Zambia
chemical_list: D000431:Ethanol