1. Department of Paediatric NeurologyCatholic UniversityLargo Gemelli 800168Rome Italy
2. Institute of Genetic MedicineNewcastle UniversityNewcastle United Kingdom
3. Department of NeurologyColumbia University Medical CenterNew York USA
4. Dubowitz Neuromuscular CentreUCL Institute of Child Health & Great Ormond Street HospitalLondon United Kingdom
5. Department of NeurologyBoston Children's Hospital, Harvard Medical SchoolBoston Massachusetts USA
6. Division of Neurology, Children's Hospital of Philadelphia and Departments of Neurology and PediatricsPerelman School of Medicine at the University of PennsylvaniaPhiladelphia USA
7. Division of NeurologyNemours Children's HospitalOrlando Florida USA
8. Department of NeurologyStanford UniversityStanford California USA
9. Department of Clinical and Experimental Medicine and Nemo Sud Clinical CentreUniversity of Messina Italy