1. Center for Brain Injury and Repair, Department of Neurosurgery, Perelman School of Medicine University of Pennsylvania Philadelphia PA
2. Center for Neurotrauma, Neurodegeneration and Restoration Corporal Michael J. Crescenz Veterans Affairs Medical Center Philadelphia PA
3. School of Biomedical Engineering, Science and Health Systems Drexel University Philadelphia PA
4. Department of Bioengineering, School of Engineering and Applied Science University of Pennsylvania Philadelphia PA