1 Department of Physical Medicine and Rehabilitation, Neuromodulation Center, Spaulding Rehabilitation Hospital, Harvard Medical School, Harvard University, Boston, MA, United States.
2 Coma Science Group, GIGA-Consciousness, University Hospital of Liege, University of Liege, Liege, Belgium.
3 Spaulding-Harvard SCI Model System Center, Spaulding Rehabilitation Hospital, Boston, MA, United States.
4 Massachusetts General Hospital, Harvard Medical School, Harvard University, Boston, MA, United States.
5 Brigham and Women's Hospital, Harvard Medical School, Harvard University, Boston, MA, United States.
6 Rocky Mountain Regional Spinal Injury System, Craig Rehabilitation Hospital, Englewood, CO, United States.
7 Department of PMR, University of Colorado School of Medicine, University of Colorado, Aurora, CO, United States.