1. Department of Neurosurgery, University of California, San Diego , San Diego, CA , USA
2. School of Medicine, University of California, San Diego , San Diego, CA , USA
3. Department of Pediatrics, University of California, San Diego , San Diego, CA , USA
4. School of Public Health, University of California, San Diego , San Diego, CA , USA
5. Division of Trauma , Surgical Critical Care, Burns and Acute Care Surgery, Department of Surgery, , San Diego, CA , USA
6. University of California, San Diego , Surgical Critical Care, Burns and Acute Care Surgery, Department of Surgery, , San Diego, CA , USA