title: Letter: Heparin and prevention of deep-vein thrombosis.
mesh_terms: D001780:Blood Coagulation Tests; D006493:Heparin / Q000008:administration & dosage / Q000627:therapeutic use*; D006801:Humans; D007279:Injections, Subcutaneous; D009203:Myocardial Infarction / Q000150:complications; D011655:Pulmonary Embolism / Q000150:complications; D013924:Thrombophlebitis / Q000517:prevention & control*; D013927:Thrombosis / Q000188:drug therapy / Q000517:prevention & control*
chemical_list: D006493:Heparin