1 Department of Neurosurgery, Center for Brain Injury and Repair, University of Pennsylvania, 3320 Smith Walk, 105 Hayden Hall, Philadelphia, PA, 19104, USA.
2 Center for Neurotrauma, Neurodegeneration & Restoration, Michael J. Crescenz Veterans Affairs Medical Center, Philadelphia, PA, 19104, USA.
3 Department of Bioengineering, School of Engineering and Applied Science, University of Pennsylvania, Philadelphia, PA, 19104, USA.
4 School of Psychology and Neuroscience, University of Glasgow, Glasgow, G12 8QQ, UK.
5 Department of Neuropathology, Queen Elizabeth University Hospital, Glasgow, G51 4TF, UK.
6 Department of Neurosurgery, Center for Brain Injury and Repair, University of Pennsylvania, 3320 Smith Walk, 105 Hayden Hall, Philadelphia, PA, 19104, USA. [email protected].