From the Departments of *Anesthesiology
†Surgery, Duke University Medical Center, Durham, North Carolina.
Accepted for publication April 19, 2018.
The authors declare no conflicts of interest.
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Address correspondence to Jamie R. Privratsky, MD, PhD, Department of Anesthesiology, Duke University Medical Center, DUMC Box 3094, 2301 Erwin Rd, Durham, NC 27710. Address e-mail to email@example.com.