1. Department of Bioengineering, Imperial College London, London, UK
2. Department of Clinical and Movement Neurosciences, Institute of Neurology, University College London, London, UK
3. Kentucky Spinal Cord Injury Research Center, University of Louisville, Louisville, Kentucky
4. Department of Bioengineering, University of Louisville, Louisville, Kentucky
5. Frazier Rehabilitation Institute, University of Louisville Health, Louisville, Kentucky
6. Department of Neurological Surgery, University of Louisville, Louisville, Kentucky