title: Gastrointestinal bleeding.
mesh_terms: D000208:Acute Disease; D000328:Adult; D000367:Age Factors; D000368:Aged; D002927:Cimetidine / Q000627:therapeutic use; D004381:Duodenal Ulcer / Q000150:complications; D005260:Female; D006471:Gastrointestinal Hemorrhage / Q000175:diagnosis / Q000209:etiology / Q000401:mortality / Q000628:therapy; D005773:Gastroscopy; D006801:Humans; D008297:Male; D008875:Middle Aged; D010438:Peptic Ulcer Hemorrhage / Q000209:etiology; D013004:Somatostatin / Q000627:therapeutic use; D013276:Stomach Ulcer / Q000150:complications
chemical_list: D013004:Somatostatin; D002927:Cimetidine