title: Low-dose heparin: an aid to therapy.
mesh_terms: D001241:Aspirin / Q000627:therapeutic use; D002986:Clinical Trials as Topic; D004087:Dihydroergotamine / Q000627:therapeutic use; D004311:Double-Blind Method; D004558:Electric Stimulation; D006470:Hemorrhage / Q000139:chemically induced; D006493:Heparin / Q000008:administration & dosage* / Q000009:adverse effects; D006801:Humans; D011183:Postoperative Complications / Q000517:prevention & control; D011446:Prospective Studies; D011655:Pulmonary Embolism / Q000517:prevention & control; D013923:Thromboembolism / Q000188:drug therapy* / Q000517:prevention & control; D013924:Thrombophlebitis / Q000517:prevention & control
chemical_list: D004087:Dihydroergotamine; D006493:Heparin; D001241:Aspirin