1. Department of Health & Human Services, Administration on Aging. Projected Future Growth of the Older Population. Accessed May 3, 2014. http://www.aoa.gov/aoaroot/aging_statistics/future_growth/future_growth.aspx
2. Reducing functional decline in hospitalized elderly;Kleinpell,2008
3. Keehan SP, et al. Age estimates in the national health accounts. Health Care Financ Rev. Epub 2004 Dec 2.
4. Centers for Medicare and Medicaid Services’ “never events”: An analysis and recommendations to hospitals;Mattie;Health Care Manag (Frederick),2008
5. The nature of adverse events in hospitalized patients. Results of the Harvard Medical Practice Study II;Leape;N Engl J Med,1991