1. Sports Medicine and Performance Center, Children’s Hospital of Philadelphia, Philadelphia, Pennsylvania
2. Center for Injury Research and Prevention, Children’s Hospital of Philadelphia, Philadelphia, Pennsylvania
3. Perelman School of Medicine, University of Pennsylvania, Philadelphia
4. College of Optometry, State University of New York, New York
5. University of Pennsylvania School of Nursing, Philadelphia
6. Department of Biomedical Engineering, Georgia Institute of Technology and Emory University, Atlanta