title: Emergency use of cimetidine in acute gastrointestinal hemorrhage: endoscopic evaluation.
mesh_terms: D002927:Cimetidine / Q000627:therapeutic use*; D004381:Duodenal Ulcer / Q000188:drug therapy*; D005773:Gastroscopy; D006146:Guanidines / Q000627:therapeutic use*; D006801:Humans; D008297:Male; D008875:Middle Aged; D010438:Peptic Ulcer Hemorrhage / Q000188:drug therapy*
chemical_list: D006146:Guanidines; D002927:Cimetidine