1. Spaulding Rehabilitation Hospital, Charlestown, Massachusetts.
2. Department of Physical Medicine and Rehabilitation, Harvard Medical School, Boston, Massachusetts.
3. JFK Johnson Rehabilitation Institute, Edison, New Jersey.
4. Methodist Rehabilitation Center, Jackson, Mississippi.
5. TIRR Memorial Hermann, Houston, Texas.
6. SRH Fachkrankenhaus Neresheim, Neresheim, Germany.
7. Department of Physical Medicine and Rehabilitation, Carolinas Rehabilitation, Charlotte, North Carolina.
8. Department of Physical Medicine and Rehabilitation, Indiana University School of Medicine, Indianapolis, Indiana.
9. Brain Injury Program, Bryn Mawr Rehab Hospital, Malvern, Pennsylvania.
10. Center for Biostatistics, Icahn School of Medicine at Mount Sinai, New York, New York.