title: Free-floating thrombus and pulmonary embolism.
authors.forename: L J
authors.initials: LJ
authors.lastname: Greenfield
mesh_terms: D019992:Databases as Topic; D006801:Humans; D011655:Pulmonary Embolism / Q000209:etiology* / Q000517:prevention & control*; D013927:Thrombosis / Q000150:complications*; D016306:Vena Cava Filters / Q000009:adverse effects