1. [CBO] Congressional Budget Office. 2003. The Pharmaceutical Market Access Act of 2003 [online]. Accessed 25 September 2005. URL: http://www.cbo.gov/showdoc.cfm?index=4852&sequence=0.
2. [CMS] Centers for Medicare and Medicaid Services. 2005. Estimates from Centers for Medicare and Medicaid Services [online]. Accessed on 23 September 2005. URL: http://www.cms.hhs.gov/ N a t i o n a l H e a l t h E x p e n d D a t a / 0 3 _ N a t i o n a l H e a l t h A c c o u n t s Projected.asp#TopOfPage.