Spinal injection procedures: volume, provider distribution, and reimbursement in the U.S. medicare population from 1993 to 1999.
Carrino JA, Morrison WB, Parker L, Schweitzer ME, Levin DC, Sunshine JH. Spinal injection procedures: volume, provider distribution, and reimbursement in the U.S. medicare population from 1993 to 1999. Radiology. 2002 Dec; 225(3):723-9.