1. Department of Emergency Medicine, Johns Hopkins University School of Medicine, Baltimore, Maryland.
2. Center for Neuroscience and Regenerative Medicine, Uniformed Services University of the Health Sciences, Bethesda, Maryland.
3. Clinical Chemistry Laboratory, San Francisco General Hospital, San Francisco, California.
4. Department of Neurological Surgery, University of California San Francisco, San Francisco, California.
5. Department of Radiology, Johns Hopkins University School of Medicine, Baltimore, Maryland.
6. Department of Medicine, the Advanced Clinical Biosystems Research Institute, Cedars Sinai Medical Center, Los Angeles, California.
7. Department of Pediatrics, Johns Hopkins University School of Medicine, Baltimore, Maryland.
8. The Transforming Research and Clinical Knowledge in TBI (TRACK-TBI) Investigators.
9. Department of Neurological Surgery, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania.
10. Seton Brain and Spine Institute, Austin, Texas.
11. Department of Rehabilitation Medicine, Mount Sinai School of Medicine, New York, New York.
12. Department of Neurosurgery, Antwerp University Hospital, Edegem, Belgium.
13. Department of Radiology and Biomedical Imaging University of California San Francisco, San Francisco, California.
14. Department of Public Health Center for Medical Decision Making Erasmas Medical Center, Rotterdam, the Netherlands.
15. Department of Psychology, University of Texas, Austin, Texas.