Article PubMed
Annals of internal medicine  (2012)

Oral direct Factor Xa inhibitors versus low-molecular-weight heparin to prevent venous thromboembolism in patients undergoing total hip or knee replacement=> a systematic review and meta-analysis.

Neumann, Ignacio; Rada, Gabriel; Claro, Juan Carlos; Carrasco-Labra, Alonso; Thorlund, Kristian; Akl, Elie A; Bates, Shannon M; Guyatt, Gordon H