1. Department of Population and Public Health Sciences, Keck School of Medicine of USC, University of Southern California, Los Angeles, CA, USA
2. Department of Integrative Physiology, University of Colorado Boulder, Boulder, CO, USA
3. Department of Family Medicine and Orthopedics, University of Colorado School of Medicine, Denver, CO, USA
4. Department of Intercollegiate Athletics, University of Colorado Boulder, Boulder, CO, USA