Department of Anesthesiology, Duke University Medical Center, Durham, North Carolina
Supplemental data available at www.anesthesia-analgesia.org.
Accepted for publication March 2, 2005.
Address correspondence and reprint requests to Abigail H. Melnick, MD, Department of Anesthesiology, Box 3094, Duke University Medical Center, Durham, NC 27710. Address electronic mail to firstname.lastname@example.org.