1. Trauma Services Department, The Medical Center of Plano, 3901 W. 15th Street, Plano, TX 75075, USA
2. Department of Trauma Research, Medical Center of Plano, 3901 W. 15th Street, Plano, TX 75075, USA
3. Department of Trauma Research, Swedish Medical Center, 501 E. Hampden Avenue, Englewood, CO 80113, USA
4. Department of Trauma Research, St. Anthony Hospital, 11600 W. 2nd Place, Lakewood, CO 80228, USA
5. Department of Trauma Research, Penrose Hospital, 2222 N. Nevada Avenue, Colorado Springs, CO 80907, USA
6. Trauma Services Department, Swedish Medical Center, 501 E. Hampden Avenue, Englewood, CO 80113, USA
7. Rocky Vista University, 8401 S. Chambers Road, Parker, CO 80134, USA
8. Trauma Services Department, St. Anthony Hospital, 11600 W. 2nd Place, Lakewood, CO 80228, USA