title: Pulmonary embolism: silent killer of the elderly.
mesh_terms: D006493:Heparin / Q000627:therapeutic use; D006801:Humans; D011379:Prognosis; D011655:Pulmonary Embolism / Q000175:diagnosis* / Q000188:drug therapy / Q000209:etiology / Q000401:mortality / Q000473:pathology / Q000601:surgery
chemical_list: D006493:Heparin