1 Center for Injury Research and Policy, Johns Hopkins Bloomberg School of Public Health, 624 North Broadway, Room 482, Baltimore, MD 21205. E-mail address for E.J. MacKenzie: emackenz@jhsph.edu
2 Department of Social Sciences and Health Policy, Wake Forest University School of Medicine, 2000 West 1st Street, Winston-Salem, NC 27157
3 Department of Orthopaedic Surgery, Carolinas Medical Center, 1616 Scott Avenue, Charlotte, NC 28203
4 The R Adams Cowley Shock Trauma Center, University of Maryland at Baltimore, 22 South Green Street, Suite T3R54, Baltimore, MD 21201
5 Department of Orthopaedic Surgery, Wake Forest University Medical Center, Medical Center Boulevard, Winston-Salem, NC 27157
6 Department of Orthopaedic Surgery, University of Minnesota Medical School, 2450 Riverside Avenue South, Suite R200, Minneapolis, MN 55454
7 Department of Orthopaedic Surgery, University of Washington, 325 Ninth Avenue, Box 359798, Seattle, WA 98104
8 Orthopaedic Trauma Service, Florida Orthopaedic Institute, 4 Columbia Drive, Suite 710, Tampa, FL 33606
9 Orthopedic Trauma Association of North Texas, 3600 Gaston Avenue, Suite 1101, Barnett Tower, Dallas, TX 75246
10 Department of Orthopaedic Surgery, University of Texas Southwestern Medical Center, 5323 Harry Hines Boulevard, Dallas, TX 75390
11 Division of Orthopaedics and Rehabilitation, Department of Surgery, Southern Illinois University, P.O. Box 19679, Springfield, IL 62794
12 Department of Orthopaedic Surgery, Cleveland MetroHealth Medical Center, 2500 MetroHealth Drive, Cleveland, OH 44109
13 Department of Orthopaedic Surgery, Orlando Regional Medical Center, 22 West Underwood Street, 4th Floor, Orlando, FL 32806
