1. Departments of Surgery and Neurosurgery, Division of Trauma & Surgical Critical Care, Vanderbilt University Medical Center, Nashville, TN, USA
2. Department of Hearing and Speech Sciences, Vanderbilt University School of Medicine, Nashville, TN, USA
3. Department of Communication Sciences and Disorders, University of Tulsa, Tulsa, OK, USA
4. Department of Biostatistics
5. Departments of Anesthesiology, Surgery, and Biomedical Informatics, Vanderbilt University School of Medicine, Nashville, TN, USA
6. Veterans Affairs (VA) Tennessee Valley Healthcare System, Nashville VA Medical Center, Nashville, TN, USA