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Callaghan JJ, Dorr LD, Engh GA, Hanssen AD, Healy WL, Lachiewicz PF, et al. Prophylaxis for thromboembolic disease: recommendations from the American College of Chest Physicians--are they appropriate for orthopaedic surgery? J Arthroplasty. 2005 Apr;20(3):273–4.

Callaghan, John J., et al. “Prophylaxis for thromboembolic disease: recommendations from the American College of Chest Physicians--are they appropriate for orthopaedic surgery?” J Arthroplasty, vol. 20, no. 3, Apr. 2005, pp. 273–74. Pubmed, doi:10.1016/j.arth.2005.01.014.

Callaghan JJ, Dorr LD, Engh GA, Hanssen AD, Healy WL, Lachiewicz PF, Lonner JH, Lotke PA, Ranawat CS, Ritter MA, Salvati EA, Sculco TP, Thornhill TS, American Colleg of Chest Physicians. Prophylaxis for thromboembolic disease: recommendations from the American College of Chest Physicians--are they appropriate for orthopaedic surgery? J Arthroplasty. 2005 Apr;20(3):273–274.