Hannah, H Pulmonary emboli: experience with the vena caval umbrella. [electronic resource] - The Journal of the Kansas Medical Society Jun 1977 - 286-9 p. digital Publication Type: Journal Article ISSN: 0022-8699 Subjects--Topical Terms: AdultAgedFemaleHumansMaleMiddle AgedPostoperative ComplicationsPulmonary Embolism--diagnosisRecurrenceVenae Cavae--surgery