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From the Uniformed Services University of the Health Sciences, NMOTC/University of Pennsylvania (J.A.Y.), Philadelphia, PA; CSTARS Cincinnati (V.G.S.), University of Cincinnati, Cincinnati, Ohio; and DoD Combat Casualty Care Research Program (T.M.P.), Washington, DC. Supplemental digital content is available for this article. Direct URL citations appear in the printed text, and links to the digital files are provided in the HTML text of this article on the journal's Web site (www.jtrauma.com). Address for correspondence: Jay A. Yelon, DO, Uniformed University of Health Sciences, Bethesda, MD; email: email protected.
Yelon et al. (Mon,) studied this question.