Postoperative deep-vein thrombosis: identifying high-risk patients.
D006493:Heparin / Q000008:administration & dosage; D006801:Humans; D007430:Intraoperative Care; D011183:Postoperative Complications / Q000517:prevention & control*; D012306:Risk; D013924:Thrombophlebitis / Q000517:prevention & control*
D006493:Heparin