1 Department of Neurology, Center for Neurotechnology and Neurorecovery, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA. ybodien@mgh.harvard.edu.
2 Department of Physical Medicine and Rehabilitation, Spaulding Rehabilitation Hospital, Harvard Medical School, Charlestown, MA, USA. ybodien@mgh.harvard.edu.
3 Department of Neurology, Boston Children's Hospital, Harvard Medical School, Boston, MA, USA.
4 Department of Neurology, Copenhagen University Hospital - Rigshospitalet, Copenhagen, Denmark.
5 Department of Clinical Medicine, University of Copenhagen, Copenhagen, Denmark.
6 Interdepartmental Division of Critical Care Medicine, University of Toronto, Toronto, ON, Canada.
7 Department of Neurorehabilitation, IRCCS, Don Carlo Gnocchi Foundation, Florence, Italy.
8 Departments of Critical Care Medicine, Neurology, and Neurosurgery, UPMC Healthcare System, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA.