Division of Trauma and Critical Care, Department of Surgery, School of Medicine, University of Washington, Seattle, WA. Department of Surgery, Denver Health Medical Center, University of Colorado, Denver, CO. Center for Translational Injury Research, Division of Acute Care Surgery, Department of Surgery, Medical School, University of Texas Health Science Center at Houston, Houston, TX. Division of Trauma and Critical Care, Department of Surgery, University of Cincinnati, Cincinnati, OH. Division of Trauma and Critical Care, Department of Surgery, University of Cincinnati, Cincinnati, OH. Center for Translational Injury Research, Division of Acute Care Surgery, Department of Surgery, Medical School, University of Texas Health Science Center at Houston, Houston, TX. Division of Trauma and Critical Care, Department of Surgery, University of Cincinnati, Cincinnati, OH. Division of General Surgery, Department of Surgery, School of Medicine, University of California San Francisco, San Francisco, CA. Center for Translational Injury Research, Division of Acute Care Surgery, Department of Surgery, Medical School, University of Texas Health Science Center at Houston, Houston, TX. Division of Trauma, Critical Care and Acute Care Surgery, School of Medicine, Oregon Health & Science University, Portland, OR. Division of Trauma, Critical Care and Acute Care Surgery, School of Medicine, Oregon Health & Science University, Portland, OR. Division of Critical Care and Perioperative Medicine, Department of Anesthesiology, School of Medicine, University of Alabama at Birmingham, Birmingham, AL. Division of Trauma and Critical Care, University of Southern California, Los Angeles, CA. Division of Trauma, Burns and Surgical Critical Care, Department of Surgery, School of Medicine, University of Alabama at Birmingham, Birmingham, AL. R Adams Cowley Shock Trauma Center, Program in Trauma, University of Maryland School of Medicine, Baltimore, MD. Center for Translational Injury Research, Division of Acute Care Surgery, Department of Surgery, Medical School, University of Texas Health Science Center at Houston, Houston, TX. Division of Trauma and Critical Care, Department of Surgery, School of Medicine, University of Washington, Seattle, WA.