1 Department of Clinical and Movement Neurosciences UCL Queen Square Institute of Neurology London United Kingdom.
2 Neurosciences Resarch Centre, Molecular and Clinical Sciences Research Institute St George's University of London London United Kingdom.
3 Neurorehabilitation Unit IRCCS Centro Neurolesi "Bonino Pulejo," Messina Italy.
4 Department of Promoting Health, Maternal-Infant, Excellence and Internal and Specialized Medicine (ProMISE) G. D'Alessandro University of Palermo Palermo Italy.
5 Department of Experimental and Clinical Medicine University of Messina Messina Italy.
6 Department of Neurosciences and Pediatrics UCSD San Diego California USA.
7 Division of Neurology Rady Children's Hospital San Diego California USA.
8 Rady Children's Institute of Genomic Medicine San Diego California USA.