[Attempted analysis of the value of preventive therapy of postoperative venous thrombosis].
D006801:Humans; D011184:Postoperative Period; D011655:Pulmonary Embolism / Q000517:prevention & control*; D013514:Surgical Procedures, Operative / Q000150:complications*; D013924:Thrombophlebitis / Q000517:prevention & control*; D020246:Venous Thrombosis
PULMONARY EMBOLISM/prevention and control; SURGERY, OPERATIVE/complications; THROMBOPHLEBITIS/prevention and control