1 Neurocritical Care Unit, Department of Neurology, University of Chicago Medical Center, 5841 S. Maryland Avenue, Chicago, IL, 60637, USA. lazaridis@uchicago.edu.
2 Section of Neurosurgery, University of Chicago Medical Center, Chicago, IL, USA. lazaridis@uchicago.edu.
3 Division of Neurocritical Care, University of Oklahoma Health Science Center, Oklahoma City, OK, USA.
4 Division of Neurophysiology, University of Oklahoma Health Science Center, Oklahoma City, OK, USA.
5 Center for Bioethics and Humanities, SUNY Upstate Medical University, Syracuse, NY, USA.