Regional variations in cost of trauma care in the United States: Who is paying more?

Augustine C. Obirieze, Darrell J. Gaskin, Cassandra V. Villegas, Stephen M. Bowman, Eric B. Schneider, Tolulope A. Oyetunji, Elliott R. Haut, David T. Efron, Edward E. Cornwell, Adil H. Haider