1. Emergency Services Institute, WakeMed Health and Hospitals, Raleigh, NC
2. Matthew Gfeller Sport-Related Traumatic Brain Injury Research Center, Department of Exercise and Sport Science, University of North Carolina at Chapel Hill
3. Athletic Training Program, A.T. Still University, Mesa, AZ
4. Department of Health Behavior and Health Education, University of North Carolina at Chapel Hill
5. Department of Epidemiology, University of North Carolina at Chapel Hill
6. Injury Prevention Research Center, University of North Carolina at Chapel Hill