From the *Department of Industrial Engineering, Dalhousie University, Halifax, Nova Scotia, Canada; †Research and Development, Canadian Blood Services, Ottawa, Ontario, Canada; and ‡Department of Anesthesiology, University of Virginia, Charlottesville, Virginia.
Accepted for publication October 18, 2013.
Funding: Institutional and Departmental Sources.
The authors declare no conflicts of interest.
Reprints will not be available from the authors.
Address correspondence to Edward C. Nemergut, MD, Associate Professor of Anesthesiology and Neurosurgery, University of Virginia Health System, P.O. Box 800710, Charlottesville, VA 22908. Address e-mail to email@example.com.