From the Department of Anesthesiology, VA San Diego Healthcare System, San Diego, California.
Accepted for publication October 18, 2013.
Funding: Salary from VA San Diego Healthcare System and from UC San Diego Department of Anesthesiology.
The author declares no conflicts of interest.
Reprints will not be available from the author.
Address correspondence to Randolph H. Hastings, MD, PhD, Department of Anesthesiology, VA San Diego Healthcare System, 3350 La Jolla Village Dr., 125 San Diego, CA 92161. Address e-mail to firstname.lastname@example.org.