1. Washington University School of Medicine, St. Louis, Missouri.
2. Department of Neurological Surgery, University of Washington, Seattle, Washington.
3. Landstuhl Regional Medical Center, Landstuhl, Germany.
4. Naval Medical Center Portsmouth, Portsmouth, Virginia.
5. Department of Neurology, Berkshire Medical Center, Pittsfield, Massachusetts.
6. Department of Neurosurgery, Virginia Commonwealth University, Richmond, Virginia.
7. Acute Surgical Care Specialists, El Paso, Texas.
8. Trauma, Critical Care, and Acute Care Surgery, Walter Reed National Military Medical Center, Bethesda, Maryland.
9. Trauma and Critical Care, Oregon Health and Sciences University, Portland, Oregon.
10. US Air Force Center for Sustainment of Trauma & Readiness Skills, R. Adams Cowley Shock Trauma Center, University of Maryland, Baltimore, Maryland.