1. Landefeld CS. Improving health care for older persons. Ann Intern Med. 2003;139:421–4.
2. DeFrances CJ, Hall MJ. 2002 National hospital discharge survey. Adv Data. 2004; 1–29.
3. Merrill CT, Elixhauser A. Hospitalization in the United States, 2002: HCUP Fact Book No. 6. Report No. AHRQ, Publication No. 05-0056. Rockville, MD: AHRQ; 2005 [on-line].
www.ahrq.gov/data/hcup/factbk6
. Accessed 23 Aug 2008.
4. Bragg E, Hansen JC. A revelation of numbers: will America’s eldercare workforce be ready to care for an aging America? Generations. 2010;34(4):11–9.
5. Society of Hospital Medicine [Internet]. Text on hospital medicine for use on Websites and Newsletters.
http://www.hospitalmedicine.org/AM/Template.cfm?Section=Home&TEMPLATE=/CM/ContentDisplay.cfm&CONTENTID=23498
. Accessed 10 Sept 2012.