1. Department of Orthopaedic Surgery, Tulane University School of Medicine, New Orleans, Louisiana, USA.
2. The Steadman Clinic, Steadman Philippon Research Institute, Vail, Colorado, USA.
3. Drexel University College of Medicine, Philadelphia, Pennsylvania, USA.
4. New England Patriots, Boston, Massachusetts, USA.
5. Department of Orthopaedic Surgery, Harvard Medical School, Boston, Massachusetts, USA.