title: Can we really prevent postoperative pulmonary emboli?
mesh_terms: D000328:Adult; D000368:Aged; D005260:Female; D006493:Heparin / Q000627:therapeutic use; D006801:Humans; D008297:Male; D008875:Middle Aged; D011183:Postoperative Complications / Q000517:prevention & control*; D011655:Pulmonary Embolism / Q000401:mortality / Q000517:prevention & control*; D013924:Thrombophlebitis / Q000517:prevention & control
chemical_list: D006493:Heparin