title: Low-dose heparin - present status and future trends.
mesh_terms: D002986:Clinical Trials as Topic; D004087:Dihydroergotamine / Q000627:therapeutic use; D004359:Drug Therapy, Combination; D005544:Forecasting; D006470:Hemorrhage / Q000139:chemically induced; D006493:Heparin / Q000008:administration & dosage* / Q000009:adverse effects / Q000031:analogs & derivatives; D006801:Humans; D011183:Postoperative Complications / Q000517:prevention & control*; D011655:Pulmonary Embolism / Q000517:prevention & control; D013924:Thrombophlebitis / Q000517:prevention & control*
chemical_list: D004087:Dihydroergotamine; D006493:Heparin