3Geerts WH,Pineo GF,Heist JA,et al.Prevention of venons thromboembolism:the seventh ACCP conference on antithrombotic and thrombolytic therapy.Chest,2004,126(3 suppl):338-400.
4Keiekegard A,Nogrrene L.Graduated compression stockings in the Prevention of deep vein thrombosis in patients with acute myocardial infarction.Eur Heart J,1993,14(10):1365-1368.