1. The Medicare Payment Advisory Commission: Report to the Congress: Medicare Payment Policy, March 2007, p 17
2. Health of Nations, An International Perspective on U.S. Health Care Reform;Graig,1999
3. Health of Nations, An International Perspective on U.S. Health Care Reform;Graig,1999
4. Health Economics;Phelps,2003
5. Health of Nations, An International Perspective on U.S. Health Care Reform;Graig,1999