1. Center for Child Health, Behavior, and Development, Seattle Children’s Research Institute & Department of Pediatrics, University of Washington, Seattle, Washington, USA
2. Investigation performed at the University of Georgia, Athens, Georgia, USA
3. Computer and Information Sciences, Fordham University, New York, New York, USA
4. Department of Psychiatry, Indiana University School of Medicine, Indianapolis, Indiana, USA
5. Matthew Gfeller Center & Department of Exercise and Sport Science, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA
6. Department of Radiology and Biomedical Imaging, University of California, San Francisco, California, USA
7. UGA Concussion Research Laboratory, University of Georgia, Athens, Georgia, USA
8. Department of Behavioral Sciences and Leadership, US Air Force Academy, Colorado Springs, Colorado, USA
9. University of Michigan Concussion Center, University of Michigan, Ann Arbor, Michigan, USA
10. Department of Neurosurgery, Medical College of Wisconsin, Milwaukee, Wisconsin, USA
11. School of Optometry, Indiana University, Bloomington, Indiana, USA
12. Intermountain Sports Medicine, Ogden, Utah, USA
13. Athletic Medicine, Princeton University, Princeton, New Jersey, USA
14. Center for Child Health, Behavior and Development, Seattle Children’s Research Institute, Seattle, Washington, USA
15. Keller Army Hospital, US Military Academy, West Point, New York, USA; Annapolis, Maryland, USA
16. Department Head Brigade Orthopaedics and Sports Medicine, US Naval Academy
17. Departments of Family Medicine & Orthopaedic Surgery, University of California, Los Angeles, Los Angeles, California, USA
18. Department of Rehabilitation Medicine and Pediatrics, University of Chicago, Chicago, Illinois, USA
19. Department of Kinesiology & Applied Physiology, University of Delaware, Newark, Delaware, USA
20. Community Health and Family Medicine, University of Florida, Gainesville, Florida, USA
21. Department of Physical Therapy, Miller School of Medicine, University of Miami, Coral Gables, Florida, USA
22. Department of PM&R, University of Michigan, Ann Arbor, Michigan, USA
23. Department of Exercise and Sport Science, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA
24. Department of Orthopaedic Surgery, University of Pittsburgh, Pittsburgh, Pennsylvania, USA
25. Department of Health and Rehabilitation Sciences, Temple University, Philadelphia, Pennsylvania, USA
26. Department of Orthopedics, University of Wisconsin–Madison, Madison, Wisconsin, USA
27. Department of Biomedical Engineering and Mechanics, Virginia Tech, Blacksburg, Virginia, USA
28. Department of Family and Community Medicine, Wake Forest University, Winston-Salem, North Carolina, USA
29. Wake Forest School of Medicine Family Medicine, Winston Salem State University, Winston-Salem, North Carolina, USA
30. Department of Exercise Science, California Lutheran University, Thousand Oaks, California, USA
31. Division of Orthopedics, Children’s Hospital of Philadelphia, Philadelphia, Pennsylvania, USA