1. Dubowitz Neuromuscular Centre, UCL Great Ormond Street Institute of Child Health, London WC1N 1EH, UK
2. School of Health and Sports Sciences, University of Suffolk, Ipswich IP4 1QJ, UK
3. The John Walton Muscular Dystrophy Research Centre, Newcastle University and Newcastle Hospitals NHS Foundation Trust, Newcastle NE1 7RU, UK
4. National Institute for Health Research Great Ormond Street Hospital Biomedical Research Centre, London WC1N 1EH, UK
5. Pediatric Neurology Unit, Catholic University, 00135 Rome, Italy
6. Centro Clinico Nemo, U.O.C. Neuropsichiatria Infantile Fondazione Policlinico Universitario Agostino Gemelli IRCCS, 00168 Rome, Italy
7. The NEMO Center in Milan, Neurorehabilitation Unit, University of Milan, ASST Niguarda Hospital, 20162 Milan, Italy
8. Unit of Neuromuscular and Neurodegenerative Disorders, Bambino Gesù Children’s Hospital, IRCCS, 00165 Rome, Italy
9. Department of Clinical and Experimental Medicine, University of Messina, 98122 Messina, Italy
10. Center of Translational and Experimental Myology and Department of Neuroscience, Rehabilitation, Ophtalmology, Genetics, Maternal and Child Health, IRCCS Istituto Giannina Gaslini and University of Genoa, 16132 Genoa, Italy
11. Columbia University Irving Medical Center, New York, NY 10032, USA
12. Children’s Hospital of Philadelphia, Philadelphia, PA 19104, USA
13. Department of Pediatrics, University of Pennsylvania, Philadelphia, PA 19104, USA
14. Boston Children’s Hospital, Harvard Medical School, Boston, MA 02115, USA
15. Departments of Neurology TD, Stanford University, Palo Alto, CA 94305, USA
16. Nemours Children’s Hospital and University of Central Florida College of Medicine, Orlando, FL 32827, USA
17. St. Jude Children’s Research Hospital, Memphis, TN 38105, USA