Ranitidine in acute upper gastrointestinal haemorrhage.
D000208:Acute Disease; D002927:Cimetidine / Q000627:therapeutic use*; D005663:Furans / Q000627:therapeutic use; D006471:Gastrointestinal Hemorrhage / Q000188:drug therapy*; D006146:Guanidines / Q000627:therapeutic use*; D006635:Histamine H2 Antagonists / Q000627:therapeutic use; D006801:Humans; D011899:Ranitidine
D005663:Furans; D006146:Guanidines; D006635:Histamine H2 Antagonists; D002927:Cimetidine; D011899:Ranitidine