1. Estudio sobre la enfermedad tromboembólica venosa en España,2006
2. Prevention of venous thromboembolism: The seventh ACCP Conference on Antithrombotic and Thrombolytic Therapy;Geerts;Chest,2004
3. Alonso Ortiz del Río C, Medrano Ortega FJ, Romero Alonso A, Villar Conde E, Calderón Sandubete E, Marín León I, et al. Guía PRETEMED 2003. Guía de profilaxis de enfermedad tromboembólica en patología médica. Córdoba: SADEMI; 2003.
4. National Institute for Health and Clinical Excellence (NICE). Guideline development methods – Appendix B. London: NICE; 2006 [cited 18/11/2006]. Available from: http://www.nice.org.uk/
5. Assessing the quality of reports of randomized clinical trials: is blinding necessary?;Jadad;Control Clin Trials,1996