1. Extremity Trauma & Amputation Center of Excellence, Defense Health Agency, Falls Church, Virginia, USA.
2. Department of Clinical Investigations, Womack Army Medical Center, Fort Bragg, North Carolina, USA.
3. Department of Surgery, Uniformed Services University of the Health Sciences, Bethesda, Maryland, USA.
4. John A. Feagin Jr. Sports Medicine Fellowship, Keller Army Hospital, West Point, New York, USA.
5. United States Military Academy, West Point, New York, USA.
6. Medstar Orthopaedic Institute, Washington, District of Columbia, USA.
7. Walter Reed National Military Medical Center, Washington, District of Columbia, USA.
8. Department of Physical Medicine and Rehabilitation, Uniformed Services University, Bethesda, Maryland, USA.