1. Medicare Health & Drug Plan Quality and Performance Ratings 2012 Part C & Part D Technical Notes. Centers for Medicare and Medicaid Services. http://www.cms.gov/Medicare/Medicare.html. Accessed July 21, 2012
2. Adherence to medication;Osterberg;N Engl J Med,2005
3. Adherence with statin therapy in elderly patients with and without acute coronary syndromes;Jackevicius;JAMA,2002
4. National Quality Forum endorses measures to improve medication safety and quality. National Quality Forum 2009. http://www.qualityforum.org/News_And_Resources/Press_Releases/2009/National_Quality_Forum_Endorses_Measures_to_Improve_Medication_Safety_and_Quality.aspx. Accessed November 13, 2009
5. Accuracy of Veterans Administration databases for a diagnosis of rheumatoid arthritis;Singh;Arthritis Rheum,2004