1. Trauma Research Department and
2. Trauma Research Department, St. Anthony Hospital, Lakewood, Colorado;
3. Trauma Research Department, Medical City Plano, Plano, Texas;
4. Trauma Research Department, Penrose Hospital, Colorado Springs, Colorado;
5. Department of Neurosurgery and
6. Department of Neurosurgery, Swedish Medical Center, Englewood, Colorado;
7. Trauma Services Department, Research Medical Center, Kansas City, Missouri; and
8. Rocky Vista University College of Osteopathic Medicine, Parker, Colorado