1. Department of Orthopedic Surgery, Mayo Clinic, Rochester, Minnesota, USA
2. Department of Biomedical Engineering, University of Cincinnati, Cincinnati, Ohio, USA
3. Division of Sports Medicine, Cincinnati Children′s Hospital Medical Center, Cincinnati, Ohio, USA
4. Department of Pediatrics and Orthopaedic Surgery, University of Cincinnati, Cincinnati, Ohio, USA
5. The Micheli Center for Sports Injury Prevention, Waltham, Massachusetts, USA
6. Department of Physiology and Biomedical Engineering, Mayo Clinic, Rochester, Minnesota, USA
7. Department of Physical Medicine and Rehabilitation, Mayo Clinic, Rochester, Minnesota, USA