7Westrich GH,Sculco TP.Prophylaxis against venous thromboembolic disease:costs and controversy[J].J Bone Joint Surg Am,2002;84-A(12):2306-2307.
8M. C.STRUIJK‐MULDER,H. B.ETTEMA,C. C.VERHEYEN,H. R.BüLLER.Comparing consensus guidelines on thromboprophylaxis in orthopedic surgery[J].Journal of Thrombosis and Haemostasis.2010(4)