Is the umbrella filter safe?
D000328:Adult; D005260:Female; D005374:Filtration / Q000009:adverse effects / Q000295:instrumentation*; D006801:Humans; D013923:Thromboembolism / Q000628:therapy*; D014513:Ureter / Q000293:injuries; D014682:Vena Cava, Inferior / Q000293:injuries / Q000601:surgery