aThe Feinstein Institutes for Medical Research

bThe Donald and Barbara Zucker School of Medicine at Hofstra Northwell

cThe Miami Project to Cure Paralysis

dThe University of Miami, USA

Correspondence to Dr Bloom, Professor, The Feinstein Institutes for Medical Research, 350 Community Drive, Manhasset, NY 11030, USA. Tel: +1 516 562 3839; e-mail: [email protected]