1. Center for Brain Injury & Repair, Department of Neurosurgery, Perelman School of Medicine University of Pennsylvania Philadelphia PA USA
2. Center for Neurotrauma, Neurodegeneration & Restoration Corporal Michael J. Crescenz Veterans Affairs Medical Center Philadelphia PA USA
3. Department of Bioengineering, School of Engineering and Applied Science University of Pennsylvania Philadelphia PA USA
4. Department of Neurobiology & Anatomy, College of Medicine Drexel University Philadelphia PA USA
5. Department of Neurology, Perelman School of Medicine University of Pennsylvania Philadelphia PA USA