1. School of Medicine, Tufts University, Boston, Massachusetts, USA.
2. Albany University Medical School, Albany, New York, USA.
3. Department of Orthopedic Surgery, University of Virginia, Charlottesville, Virginia, USA.
4. New England Patriots, Foxboro, Massachusetts, USA.
5. Watson Clinic, Lakeland, Florida, USA.
6. Massachusetts General Hospital, Boston, Massachusetts, USA.