1. Agency for Healthcare Research and Quality's Quality Indicators. Available at: http://www.qualityindicators.ahrq.gov. Accessed October 28, 2013.
2. Centers for Medicare and Medicaid Services press release July 31, 2008. Available at: http://www.cms.gov/apps/media/press_releases.asp. Accessed October 28, 2013.
3. National Quality Forum press release December 6, 2011. Available at: http://www.qualityforum.org/Home_New/News___Events.aspx. Accessed October 28, 2013.
4. The Surgeon General's call to action to prevent deep vein thrombosis and pulmonary embolism. Available at: http:// www.surgeongeneral.gov/library/calls/index.html. Accessed October 28, 2013.
5. Deep venous thrombosis in medical-surgical critically ill patients: Prevalence, incidence, and risk factors;Cook;Crit Care Med,2005