1. Department of Pediatrics, Penn State College of Medicine, Hershey, Pennsylvania, USA.
2. Department of Sports Medicine, SUNY Buffalo School of Medicine and Biomedical Sciences, Buffalo, New York, USA.
3. Department of Orthopedics, State University of New York at Buffalo, Buffalo, New York, USA.
4. Department of Family Medicine, Penn State College of Medicine, Hershey, Pennsylvania, USA.
5. Department of Orthopaedics and Rehabilitation, College of Medicine, Penn State University, Hershey, Pennsylvania, USA.
6. US Army Medical Research Directorate-West, Walter Reed Army Institute of Research, Joint Base Lewis-McChord, Washington, USA.
7. Quadrant Biosciences, Inc, Syracuse, New York, USA.
8. Department of Emergency Medicine, Penn State College of Medicine, Hershey, Pennsylvania, USA.
9. Department of Neurosurgery, Vanderbilt University Medical Center, Nashville, Tennessee, USA.
10. Department of Sports Medicine, Colgate University, Hamilton, New York, USA.
11. Department of Pediatrics, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, USA