1. Department of Physical Medicine and Rehabilitation, Harvard Medical School, Spaulding Rehabilitation Hospital, Charlestown, Massachusetts.
2. MassGeneral Hospital for Children Sport Concussion Program, Boston, Massachusetts.
3. Red Sox Foundation and Massachusetts General Hospital Home Base Program, Boston, Massachusetts.
4. Program in Placebo Studies and Therapeutic Encounter, Harvard Medical School, Beth Israel Deaconess Medical Center, Boston, Massachusetts.