1. DeVol R, Bedroussian A. An unhealthy America: the economic burden of chronic disease. Santa Monica (CA): Milken Institute; 2007.
2. Antos JR, Spoor C. Issues in designing a prescription drug benefit for Medicare. Washington (DC): Congressional Budget Office; 2002.
3. Crippen D, Congressional Budget Office. Testimony on disease management in Medicare: data analysis and benefit design. Washington (DC): CBO; 2002.
4. Congressional Budget Office. The long-term budget outlook. Washington (DC): CBO; 2007.