1. Emergency Medicine , Injury Prevention Center, , Ann Arbor, MI , USA
2. University of Michigan , Injury Prevention Center, , Ann Arbor, MI , USA
3. Department of Counselor Education and School Psychology, Duquesne University , Pittsburgh, PA , USA
4. Department of Health, Kinesiology, and Applied Physiology, Concordia University , Montreal, QC , Canada
5. Department of Biostatistics, Epidemiology and Informatics, University of Pennsylvania , Philadelphia, PA , USA
6. University of Michigan Emergency Medicine, Injury Prevention Center, , Ann Arbor, MI, USA
7. Athletic Training, Duquesne University , Pittsburgh, PA , USA