Heparin.
D006493:Heparin / Q000008:administration & dosage*; D006801:Humans; D007262:Infusions, Intravenous; D007279:Injections, Subcutaneous; D011655:Pulmonary Embolism / Q000517:prevention & control; D013923:Thromboembolism / Q000188:drug therapy*
D006493:Heparin