1. Institute of Genetics, San Diego, California, USA.
2. Department of Radiology and Imaging Sciences, Indiana University School of Medicine, Indianapolis, Indiana, USA.
3. Department of Epidemiology and Biostatistics, School of Public Health, Indiana University, Bloomington, Indiana, USA.
4. Department of Neurosurgery, Medical College of Wisconsin, Milwaukee, Wisconsin, USA.
5. Department of Neurosurgery, David Geffen School of Medicine at University of California, Los Angeles, Los Angeles, California, USA.
6. Division of Pediatric Neurology, Mattel Children's Hospital, University of California, Los Angeles, Los Angeles, California, USA.
7. Family Medicine, Ronald Reagan UCLA Medical Center, UCLA Health - Santa Monica Medical Center, Los Angeles, California, USA.
8. Matthew Gfeller Sport-Related Traumatic Brain Injury Research Center, Department of Exercise and Sport Science, University of North Carolina, at Chapel Hill, Chapel Hill, North Carolina, USA.
9. School of Biomedical Engineering and Sciences, Wake-Forest and Virginia Tech University, Blacksburg, Virginia, USA.
10. Virginia Tech Carilion Research Institute, Roanoke, Virginia, USA.
11. Michigan Concussion Center, School of Kinesiology, University of Michigan, Ann Arbor, Michigan, USA.
12. Department of Psychiatry, Indiana University School of Medicine, Indianapolis, Indiana, USA.