1. Department of Orthopaedic Surgery, University of Pittsburgh, Pittsburgh, PA, USA
2. Seattle Children’s Hospital, Seattle, WA, USA
3. Major League Soccer, New York, NY, USA
4. Department of Kinesiology, University of Michigan, Ann Arbor, MI, USA
5. Department of Kinesiology, Indiana University School of Medicine, Ann Arbor, MI, USA
6. Department of Kinesiology, Medical College of Wisconsin, Ann Arbor, MI, USA
7. Department of Kinesiology, Uniformed Services University of the Health Sciences, Ann Arbor, MI, USA
8. Department of Kinesiology and Applied Physiology, University of Delaware, Newark, DE, USA