From the Departments of *Anesthesiology
†Neurosurgery, University of Virginia, Charlottesville, Virginia.
Accepted for publication March 22, 2018.
The authors declare no conflicts of interest.
Reprints will not be available from the authors.
Address correspondence to Marcel E. Durieux, MD, PhD, Departments of Anesthesiology and Neurosurgery, University of Virginia, PO Box 800710, Charlottesville, VA 22911. Address e-mail to firstname.lastname@example.org.