1. Department of Surgery, University of Pittsburgh Medical Center, Pittsburgh, PA
2. Department of Emergency Medicine, University of Pittsburgh, Pittsburgh, PA
3. Graduate School of Public Health, University of Pittsburgh, Pittsburgh, PA
4. Department of Surgery, Ernest E. Moore Shock Trauma Center at Denver Health, Denver, CO
5. Division of Trauma, Critical Care, & Acute Care Surgery, Oregon Health & Science University, Portland, OR
6. Department of Surgery, Division of Trauma, Surgical Critical Care, Burns, and Acute Care Surgery, University of Arizona, Tucson, AZ
7. Department of Surgery, Baylor College of Medicine, Houston, TX
8. Department of Surgery, Division of Acute Care Surgery and Center for Translational Injury Research, McGovern Medical School at the University of Texas Health Science Center, Houston, TX
9. Department of Emergency Medicine, University of Texas Health Science Center, McGovern Medical School, Houston, TX
10. Department of Surgery, University of Louisville, Louisville, KY
11. Department of Surgery, Vanderbilt University Medical Center, Nashville, TN