1. The Miami Project to Cure Paralysis, University of Miami Miller School of Medicine, Miami, FL, U.S.A.
2. Department of Physiology, University of Miami Miller School of Medicine, Miami, FL, U.S.A
3. Department of Neurological Surgery, University of Miami Miller School of Medicine, Miami, FL, U.S.A.
4. Department of Rehabilitation Medicine, University of Miami Miller School of Medicine, Miami, FL, U.S.A.
5. Department of Microbiology and Immunology, University of Miami Miller School of Medicine, Miami, FL, U.S.A.