2WH Geerts,D Bergqvist,GF Pineo,JA Heit,CM Samama,MR Lassen,CW Colwell,American College of Chest Physicians.Prevention of venous thromboembolism: American College of Chest Physicians Evidence-Based Clinical Practice Guidelines (8th Edition). Chest . 2008
3TORBICKI A,PERRIERA,KONSTANTINIDESS,etal.Guide-lines on the diagnosis and management of acute pulmonary embol-ism. European Heart Journal . 2008
4Anderson Frederick A,Zayaruzny Maxim,Heit John A,Fidan Dogan,Cohen Alexander T.Estimated annual numbers of US acute-care hospital patients at risk for venous thromboembolism. American journal of hematology . 2007
5WangLM,Wei L.Pulmonary embolism and deep vein thrombosis. . 2007