1 From the Division of Trauma, Critical Care, and Emergency Surgery (B.J., C.D., H.A., P.R.), Department of Surgery, University of Arizona, Tucson, Arizona; Division of Trauma, Critical Care, and Emergency Surgery (C.V.B., E.B.), Department of Surgery, Brackenridge Hospital, University of Texas Medical Branch-Austin, Austin, Texas. Division of Acute Care Surgery, Department of Surgery,University Medical Center Brackenridge,University of Texas Southwestern - Austin, Austin, TX.