1. Department of Emergency Medicine (R.A.C., M.C.K.), University of Alabama School of Medicine, Birmingham.
2. Department of Emergency Medicine, The Ohio State University, Columbus (A.R.P.).
3. Department of Emergency Medicine, University of Massachusetts Medical School-Baystate, Springfield (T.J.M.).
4. Department of Surgery, Division of Acute Care Surgery (M.C.K.), University of Alabama School of Medicine, Birmingham.
5. Center for Injury Science (M.C.K.), University of Alabama School of Medicine, Birmingham.