Deep vein thrombosis and pulmonary embolism in aged surgical patients.
D000367:Age Factors; D000368:Aged; D006801:Humans; D008875:Middle Aged; D011183:Postoperative Complications / Q000401:mortality; D011655:Pulmonary Embolism / Q000401:mortality; D013924:Thrombophlebitis / Q000401:mortality