1. Centers for Medicare and Medicaid Services (CMS). Financial report 2014. Washington, DC. Nov 2014.
2. Cohn D, Taylor P. Baby boomers approach 65-Glumly. Pew Research Center.2010; 20.
3. Administration of Aging. A profile of older Americans. Washington, DC: Department of Health and Human Services; 2013.
4. US Census Bureau. Statistical abstract of the United States: 2004–2005. Washington, DC: US Government; 2005.
5. Institute of Medicine (IOM). To err is human: building a safer health system. Washington, DC: National Academy Press; 2000.