title: Pulmonary embolism--its cause and prevention.
mesh_terms: D006801:Humans; D008026:Ligation; D011655:Pulmonary Embolism / Q000209:etiology / Q000517:prevention & control; D013924:Thrombophlebitis / Q000150:complications; D014656:Vascular Surgical Procedures / Q000295:instrumentation; D014682:Vena Cava, Inferior / Q000601:surgery