1. Department of Orthopaedic Surgery, University of Pittsburgh, 4200 5th Ave, Pittsburgh, PA 15260.
2. UPMC Sports Medicine Concussion Program, 3200 South Water St, Pittsburgh, PA 15203.
3. Department of Neurological Surgery, University of Pittsburgh, 4200 5th Ave, Pittsburgh, PA 15260.
4. Department of Psychology, University of Pittsburgh, 4200 5th Ave, Pittsburgh, PA 15260.