1. Institute of Medicine. Relieving Pain in America: A Blueprint for Transforming Prevention, Care, Education, and Research. Washington, DC: The National Academies Press; 2011.
2. Conditions A to Z. American Chronic Pain Association. Available at: http://theacpa.org/conditions (accessed June 2012).
3. Office of the Army Surgeon General. Pain Management Task Force. Pain Management Task Force Final Report: Providing a Standardized DoD and VHA Vision and Approach to Pain Management to Optimize the Care for Warriors and their Families. 2010.
4. National Center for Health Statistics. Health, United States, 2006: With Special Feature on Pain. Hyatsville, MD: US Department of Health and Human Services, Centers for Diseas Control and Prevention; 2006.
5. American Pain Foundation. Voices of Chronic Pain. New York: David Michaelson & Company, LLC; 2006.