title: Pulmonary embolism.
mesh_terms: D006493:Heparin / Q000627:therapeutic use; D006801:Humans; D010690:Phlebography; D011655:Pulmonary Embolism / Q000175:diagnosis / Q000209:etiology* / Q000517:prevention & control; D013924:Thrombophlebitis / Q000150:complications* / Q000175:diagnosis; D014463:Ultrasonography
chemical_list: D006493:Heparin