Accepted for Publication: June 15, 2012.
Author Contributions:Study concept and design: Radwan, Bai, Holcomb, and Cotton. Acquisition of data: Radwan. Analysis and interpretation of data: Radwan, Matijevic, del Junco, McCarthy, Wade, Holcomb, and Cotton. Drafting of the manuscript: Radwan, McCarthy, Wade, Holcomb, and Cotton. Critical revision of the manuscript for important intellectual content: Bai, Matijevic, del Junco, McCarthy, Wade, Holcomb, and Cotton. Statistical analysis: Radwan. Administrative, technical, and material support: Bai, Matijevic, McCarthy, Wade, Holcomb, and Cotton. Study supervision: Bai, McCarthy, Holcomb, and Cotton. Advised coauthors on alternative analytical approaches and limitations: del Junco.
Conflict of Interest Disclosures: None reported.
Funding/Support: This work was supported in part by a grant from the State of Texas Emerging Technology Fund (Dr Cotton), grant W81XWH-08-C-0712 from the US Department of Defense (Drs Cotton and Holcomb) and grant P50 GM38529 from the National Institutes of Health (Drs Cotton and Holcomb).
Previous Presentation: This study was presented at the Advanced Technology Applications for Combat Casualty Care Annual Conference; August 16, 2011; Fort Lauderdale, Florida.