1. Spaulding Rehabilitation Hospital, Charlestown, MA, USA
2. Department of Neurology, Brigham and Women’s Hospital, Boston, MA, USA
3. Departments of Neurology and Psychiatry, Massachusetts General Hospital, Boston, MA, USA
4. Department of Psychiatry, Brigham and Women’s Hospital, Boston, MA, USA
5. Department of Physical Therapy, Massachusetts General Hospital, Boston, MA, USA
6. Department of Physical Medicine and Rehabilitation, California Rehabilitation Institute, Los Angeles, CA, USA