1. Agency for Healthcare Research and Quality http://www.ahrq.gov/qual/hospsurvey09/
2. National Academy of State Health Policy 2010 http://www.nashp.org/pst-welcome
3. Agency for Healthcare Research and Quality http://www.qualityindicators.ahrq.gov/psi_overview.htm
4. U.S. Department of Health and Human Services http://www.healthcare.gov/compare/