1 Division of Neurocritical Care, Department of Neurology, University of Toledo College of Medicine, UT/PPG Neuroscience Center, 2130 West Central Avenue, Suite 201, Room 2355, Toledo, OH 43606, USA. Electronic address: deepa.malaiyandi@utoledo.edu.
2 Department of Critical Care Medicine, UPMC/University of Pittsburgh School of Medicine, 3550 Terrace Street, Scaife Hall, Room 646, Pittsburgh, PA 15261, USA. Electronic address: shutter@upmc.edu.