1. Department of Neurology, USC Keck School of Medicine, Los Angeles, California, USA.
2. Neurocritical Care, Cerebrovascular and Endovascular Neurosurgery, Wellstar Health System, Atlanta, Georgia, USA.
3. Division of Critical Care, University of British Columbia, Vancouver General Hospital, Vancouver, British Columbia, Canada.
4. Department of Neurology, University of Maryland School of Medicine, Baltimore, Maryland, USA.