to determine the association of duration of warfarin anticoagulant therapy after hospitalization for venous thromboembolism with the probability of recurrent thromboembolism and with the risks of hemorrhage , medical records of 2,422 patients hospitalized in 1970 through 1980 with pulmonary embolism , thrombophlebitis , or both were reviewed .
C0043031
warfarin
C0034065
pulmonary embolism