1. Division of Neurology, Children's Hospital of Philadelphia, Philadelphia, PA, USA
2. Department of Physical Therapy, Children's Hospital of Philadelphia, Philadelphia, PA, USA
3. Synaptixbio Ltd, Oxfordshire, United Kingdom
4. Division of Neonatology, Department of Pediatrics, Children's Hospital of Philadelphia, Philadelphia, PA, USA
5. Neurology Department, Birmingham Children's Hospital, Institute of Health and Neurodevelopment, Aston University, Birmingham, United Kingdom
6. Unit of Pediatric Neurology, COALA (Center for Diagnosis and Treatment of Leukodystrophies), V. Buzzi Children's Hospital, Milan, Italy
7. Department of Biomedical and Clinical Sciences, L. Sacco University Hospital, Università degli Studi di Milano, Milan, Italy
8. Department of Clinical and Movement Neurosciences, UCL Queen Square Institute of Neurology, University College London, London, United Kingdom
9. Departments of Neurology and Neurosurgery, Pediatrics and Human Genetics, McGill University, Montreal, QC, Canada
10. Department Specialized Medicine, Division of Medical Genetics, McGill University Health Centre, Montreal, QC, Canada
11. Child Health and Human Development Program, Research Institute of the McGill University Health Centre, Montreal, QC, Canada
12. Department of Child Neurology, Amsterdam Leukodystrophy Center, Emma Children's Hospital, Amsterdam University Medical Centers, and Amsterdam Neuroscience, Cellular & Molecular Mechanisms, Vrije Universiteit, Amsterdam, the Netherlands
13. Department of Integrative Neurophysiology, Center for Neurogenomics and Cognitive Research, Vrije Universiteit, Amsterdam, the Netherlands
14. Department of Neurology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA