Evidence-based medicine.
Chagla
L S
LS
McCulloch
P G
PG
D000208:Acute Disease; D001803:Blood Transfusion; D015510:Clinical Medicine; D006471:Gastrointestinal Hemorrhage / Q000188:drug therapy / Q000628:therapy; D006801:Humans; D016032:Randomized Controlled Trials as Topic; D011899:Ranitidine / Q000627:therapeutic use
D011899:Ranitidine