1. Relieving pain in America: a blueprint for transforming prevention, care, education, and research;Institute of Medicine Committee on Advancing Pain Research, Care and Education, The National Academies Collection. Reports funded by National Institutes of Health,2011
2. White House Commission on Complementary and Alternative Medicine Policy. March 2002. U.S. Government Printing Office. Washington DC. http://www.whccamp.hhs.gov/. Accessed September 23, 2014.
3. National Association of Chain Drug Stores. 2009 community pharmacy results. 2009. Available at: http://www.nacds.org/user-assets/pdfs/.../2008CommunityPharmacyResults.pdf. Accessed March 9, 2012.
4. Projections of US prevalence of arthritis and associated activity limitations;Hootman;Arthritis Rheum,2006
5. Results from the 2011 National Survey on Drug Use and Health,2011