TY - JOUR AU - Falck-Ytter, Y; Francis, C W; Johanson, N A TI - Prevention of VTE in orthopedic surgery patients: antithrombotic therapy and prevention of thrombosis, 9th ed.: American College of Chest Physicians Evidence-Based Clinical Practice Guidelines JO - Chest VL - 141 PY - 2012 DO - 10.1378/chest.11-2404 L3 - PubMed-ID: 22315265 SP - e278S EP - e325S N1 - (2, Suppl): ER -