From the *Department of Anesthesiology, University Medical Center Utrecht, Utrecht, the Netherlands; and †Department of Anesthesia and Pain Management, Toronto General Hospital, University Health Network, Toronto, Canada.
Accepted for publication July 25, 2017.
The authors declare no conflicts of interest.
Reprints will not be available from the authors.
Address correspondence to Teus H. Kappen, MD, PhD, Department of Anesthesiology, University Medical Center Utrecht, PO Box 85500, Mail stop Q.04.2.313, 3508 GA Utrecht, the Netherlands. Address e-mail to firstname.lastname@example.org.