Regionalization and the underuse of angiography in the Veterans Affairs Health Care System as compared with a fee-for-service system.
Petersen LA, Normand SL, Leape LL, McNeil BJ. Regionalization and the underuse of angiography in the Veterans Affairs Health Care System as compared with a fee-for-service system. N Engl J Med. 2003 May 29; 348(22):2209-17.