(1)
Yoshida, W. B.; Dib, R. P. E.; Yoshida, R. de A.; Maffei, F. H. de A. Ximelagatran Versus Warfarin for Prophylaxis of Venous Thromboembolism in Major Orthopedic Surgery: Systematic Review of Randomized Controlled Trials. Sao Paulo Med J 2006, 124, 355-361.