Supplemental Digital Content is available in the text.Published ahead of print April 4, 2013
From the Department of Anesthesiology and Critical Care Medicine, Johns Hopkins University, Baltimore, Maryland.
Accepted for publication January 29, 2013
Published ahead of print April 4, 2013
Funding: Not funded.
The authors declare no conflicts of interest.
Supplemental digital content is available for this article. Direct URL citations appear in the printed text and are provided in the HTML and PDF versions of this article on the journal’s Web site.
Reprints will not be available from the authors.
Address correspondence to Nadia Hensley, MD, Department of Anesthesiology and Critical Care Medicine, Johns Hopkins University, 6208 Zayed Tower, 1800 Orleans St., Baltimore, MD 21287. Address e-mail to email@example.com.