Cimetidine in acute upper gastrointestinal bleeding.
D000208:Acute Disease; D002927:Cimetidine / Q000627:therapeutic use*; D002986:Clinical Trials as Topic; D006471:Gastrointestinal Hemorrhage / Q000188:drug therapy*; D006146:Guanidines / Q000627:therapeutic use*; D006801:Humans; D008875:Middle Aged; D011897:Random Allocation
D006146:Guanidines; D002927:Cimetidine