1. Smedley BD, Stith AY, Nelson AR, editors. Unequal treatment: confronting racial and ethnic disparities in health care. Washington, DC: National Academies Press, 2003.
2. Shi L, Stevens GD. Vulnerable populations in the United States, 1st ed. San Francisco, CAL: Jossey-Bass, 2005.
3. Agency for Healthcare Research and Quality. 2007 National Healthcare Disparities Report. AHRQ Publication 08-0041. Rockville, MD: US Department of Health and Human Services, Agency for Healthcare Research and Quality. 2007.