1. Congressional Budget Office, Congress of the United States. The 2012 long-term budget outlook. Available at: http://www.cbo.gov/sites/default/files/cbofiles/attachments/06-05-Long-Term_Budget_Outlook.pdf. Accessed August 24, 2012.
2. Trends in Medicare reimbursement;Peck;Bull Am Coll Surg,2006
3. Elmendorf DW. Letter to the Honorable John Boehner. Congressional Budget Office, July 24, 2012. Available at: http://www.cbo.gov/sites/default/files/cbofiles/attachments/43471-hr6079.pdf. Accessed September 5, 2012.
4. Principles of medical ethics;Council on Ethical and Judicial Affairs,2012
5. Code of ethics. American Association for Thoracic Surgery. Available at: http://aats.org/association/policies/Code_of_Ethics.cgi. Accessed August 24, 2012.