1. Department of Rehabilitation Medicine Center for the Intrepid, Brooke Army Medical Center JBSA Ft. Sam Houston Texas USA
2. Research and Surveillance Division DoD‐VA Extremity Trauma and Amputation Center of Excellence JBSA Ft. Sam Houston Texas USA
3. The Henry M. Jackson Foundation for the Advancement of Military Medicine, Inc. Bethesda Maryland USA
4. Department of Rehabilitation Medicine Physical Medicine and Rehabilitation, Brooke Army Medical Center JBSA Ft. Sam Houston Texas USA
5. Department of Bioengineering University of Washington Seattle Washington USA