title: Proceedings: Low dose heparin prophylaxis against pulmonary embolism.
mesh_terms: D001777:Blood Coagulation / Q000187:drug effects; D002986:Clinical Trials as Topic; D006493:Heparin / Q000008:administration & dosage / Q000627:therapeutic use*; D006801:Humans; D008875:Middle Aged; D011183:Postoperative Complications / Q000517:prevention & control; D011655:Pulmonary Embolism / Q000517:prevention & control*
chemical_list: D006493:Heparin