1. Department of Neurology, Division of Neurocritical Care, Brigham and Women's Hospital, Boston, Massachusetts, USA.
2. Departments of Neurosurgery and Neurology, University of Colorado School of Medicine, Aurora, Colorado, USA.
3. Department of Physical Medicine and Rehabilitation, Indiana University School of Medicine, Indianapolis, Indiana, USA.
4. Department of Physical Medicine and Rehabilitation, Spaulding Rehabilitation Hospital and Harvard Medical School, Charlestown, Massachusetts, USA.
5. Department of Neurology, Center for Neurotechnology and Neurorecovery, Massachusetts General Hospital and Harvard Medical School, Boston, Massachusetts, USA.
6. Athinoula A. Martinos Center for Biomedical Imaging, Massachusetts General Hospital, Charlestown, Massachusetts, USA.