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• University of California, San Francisco | Brain and Spine Injury Center *⁺
• Baylor College of Medicine*
• Center for Neuroscience and Regenerative Medicine/Uniformed Services University⁺
• Denver Health* | Craig Hospital*
• Emory University*
• Harvard University | Massachusetts General Hospital*
• Harvard University | Spaulding Rehabilitation Center*
• Hennepin County Medical Center*
• Indiana University*
• Medical College of Wisconsin | Neuroscience Research Center*
• Ohio State University⁺
• Penn Presbyterian Medical Center*
• University of California, San Diego | Very Shy+
• University of Cincinnati* | UC Gardner Neuroscience Institute
• University of Florida | Center for Neuroproteomics and Biomarkers Research (CNBR)⁺
• University of Maryland Medical Center*
• University of Miami Health System*
• University of Michigan⁺
• University of Pittsburgh Medical Center | Brain Trauma Research Center*
• University of Southern California | Laboratory of Neuro Inaging (LONI)⁺ 
• University of Texas at Austin | Seton Brain and Spine Institute*
• University of Utah*
• UT Health Houston*
• UT Southwestern Medical Center | Department of Neurological Surgery*
• University of Washington | Harborview Medical Center *⁺
• Vanderbilt University Medical Center +
• Virginia Commonwealth University Medical Center | Department of Neurosurgery*

* Clinical Site

⁺ Analytic Site