2Geerts WH, Pineo GF, Heit JA, et al. Prevention of Venous Thromboembolism: The Seventh ACCP Conference on Antithrombotic and Thrombolytic Therapy. Chest, 2004, 126 (3 Suppl) :338S-400S.
3Nakamura H, Inoue Y, Kudo T, et al. Detection of venous emboli using Doppler ultrasound. Eur J Vase Endovase Surg,2008 ,35 :96- 101.
4Nguyen NT, Hinojosa MW, Fayad C, et al. Laparoscopic surgery is associated with a lower incidence of venous thromboembolism compared with open surgery. Ann Surg,2007,246:1021-1027.
5Geerts WH, Heit JA, Clagett GP, et al. Prevention of venous thromboembolism. Chest, 2001,119 Suppl : S132 - 175.