1. National Institute of Nursing Research, National Institutes of Health, Bethesda, Maryland
2. Institute for Social Science Research, University of Queensland, Brisbane
3. Department of Neurosurgery, Medical College of Wisconsin, Milwaukee
4. Center for Neuroscience and Regenerative Medicine, Uniformed Services University of the Health Sciences, Bethesda, Maryland
5. The Henry M. Jackson Foundation for the Advancement of Military Medicine, Bethesda, Maryland
6. Michigan Concussion Center, University of Michigan, Ann Arbor
7. Department of Psychiatry, Indiana University School of Medicine, Indianapolis
8. Department of Neurosurgery and Pediatrics, UCLA Steve Tisch BrainSPORT Program, University of California, Los Angeles
9. Department of Epidemiology and Biostatistics, School of Public Health, Indiana University, Bloomington
10. Keller Army Community Hospital, West Point, New York
11. United States Air Force Academy, Colorado
12. Matthew Gfeller Sport-Related Traumatic Brain Injury Research Center, Department of Exercise and Sport Science, University of North Carolina, Chapel Hill
13. Department of Orthopedics and Sports Medicine, School of Medicine and Public Health, University of Wisconsin–Madison
14. Department of Biomedical Engineering, Virginia Tech, Blacksburg
15. Department of Physical Medicine and Rehabilitation, Uniformed Services University of the Health Sciences, Bethesda, Maryland