1. Assessing payment adequacy and updating payments for physician services. Medicare Payment Advisory Commission report to Congress;Hackbarth,2003
2. Blue Cross Blue Shield Association. Blue Cross and Blue Shield plans respond to challenge of keeping medical technology affordable. Available at: http://bcbshealthissues.com/proactive/documents/. Accessed November 4, 2003.
3. Financial pressures spur physician entrepreneurialism;Pham;Health Aff,2004
4. An M.R.I. machine for every doctor? Someone has to pay;Abelson,2004
5. Insurer tightening use of imaging tests. The Boston Globe;Kowalczyk,2004