1 Department of Neurology, Tufts University School of Medicine, Boston, MA, USA.
2 Department of Medicine (Critical Care), The Ottawa Hospital, Ottawa, Canada.
3 Department of Physical Medicine and Rehabilitation, Spaulding Rehabilitation Hospital, Charlestown, MA, USA.
4 Department of Neurology, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA.
5 Department of Physical Medicine and Rehabilitation, Indiana University School of Medicine, Indianapolis, IN, USA.
6 Department of Neurology, Boston University Chobanian & Avedisian School of Medicine, and Brain Injury Program, Encompass Health Braintree Rehabilitation Hospital, Braintree, MA, USA.
7 Department of Neuro‑Rehabilitation, Hospices Civils de Lyon, Université Claude Bernard Lyon 1, Lyon, France.
8 College of Nursing, The Ohio State University, Columbus, OH, USA.
9 Sorbonne Université, Paris Brain Institute - Institut du Cerveau, ICM, INSERM, CNRS, AP-HP, Pitié-Salpêtrière Hospital, Paris, France.
10 TIRR Disorders of Consciousness Program, TIRR Memorial Hermann Hospital, H. Ben Taub Department of Physical Medicine and Rehabilitation, Baylor College of Medicine, Houston, TX, USA.
11 Research Institute, Casa Colina Hospital and Centers for Healthcare, Pomona, CA, USA.
12 Neurosciences, Pole Neuro, Sainte‑Anne Hospital, Institute of Psychiatry and Neurosciences of Paris, INSERM U1266, Université Paris Cité, Paris, France.
13 Department of Neuropsychology, Kennedy Krieger Institute, Baltimore, MD, USA.
14 Department of Psychiatry and Behavioral Sciences, Johns Hopkins University School of Medicine, Baltimore, MD, USA.
15 Department of Physical Medicine and Rehabilitation, Spaulding Rehabilitation Hospital, Charlestown, MA, USA. jgiacino@mgh.harvard.edu.
16 Department of Physical Medicine and Rehabilitation, Harvard Medical School, Boston, MA, USA. jgiacino@mgh.harvard.edu.