The Miami Project to Cure Paralysis, University of Miami Miller School of Medicine, Miami, USA. rsmith@med.miami.edu|The Miami Project to Cure Paralysis, University of Miami Miller School of Medicine, Miami, USA. rsmith@med.miami.edu|The Miami Project to Cure Paralysis, University of Miami Miller School of Medicine, Miami, USA. rsmith@med.miami.edu|The Miami Project to Cure Paralysis, University of Miami Miller School of Medicine, Miami, USA. rsmith@med.miami.edu|The Miami Project to Cure Paralysis, University of Miami Miller School of Medicine, Miami, USA. rsmith@med.miami.edu|The Miami Project to Cure Paralysis, University of Miami Miller School of Medicine, Miami, USA. rsmith@med.miami.edu