title: Intracaval umbrella filter therapy for pulmonary embolus. Long-term results.
mesh_terms: D005374:Filtration / Q000295:instrumentation*; D005500:Follow-Up Studies; D006801:Humans; D011183:Postoperative Complications; D011655:Pulmonary Embolism / Q000401:mortality / Q000601:surgery*; D012008:Recurrence; D014682:Vena Cava, Inferior / Q000601:surgery