1. Department of Neuroinflammation, Queen Square Multiple Sclerosis Centre, University College London Institute of Neurology, London, United Kingdom
2. Department of Paediatric Neurology, Great Ormond Street Hospital for Children, London, United Kingdom
3. Department of Neurology, Erasmus University Medical Center, Rotterdam, the Netherlands
4. Division of Paediatric Neurology, Department of Paediatrics, Medical University of Innsbruck, Innsbruck, Austria
5. Neurology Department, John Radcliffe Hospital, Oxford, United Kingdom
6. Department of Paediatric Neurology, Birmingham Children’s Hospital, Birmingham, United Kingdom
7. Division of Pediatric Neurology, Department of Pediatrics, Hacettepe University Faculty of Medicine, Ankara, Turkey
8. Centre Hospitalier, Universitaire Vaudois of Lausanne, Lausanne, Switzerland
9. Department of Pediatric Neurology, Groupement Hospitalier Est, Hospices Civils de Lyon, Lyon, France
10. National Referral Center for Neuro-Inflammatory Diseases and Pediatric Neurology Department, Assistance Publique-Hôpitaux de Paris, Hôpital Bicêtre, Le Kremlin-Bicêtre, France
11. Service de Neuropédiatrie, University Paris Sud, Le Kremlin-Bicêtre, France
12. Pediatric Neurology Unit, Schneider Children's Medical Center, Tel-Aviv, Israel
13. Sackler School of Medicine, Tel-Aviv University, Tel-Aviv, Israel
14. Institute of Neuroscience, Newcastle University, Newcastle, United Kingdom
15. Department of Pediatrics, Olga Hospital, Stuttgart, Germany
16. Service de Neurologie A and Eugène Devic Foundation Against Multiple Sclerosis, Observatoire Français de la Sclérose en Plaques, Hôpital Neurologique Pierre Wertheimer–Groupement Hospitalier Est, Hospices Civils de Lyon, Bron, France
17. Lyon's Neuroscience Research Center, INSERM U 1028/Centre National de la Recherche Scientifique 5292, Université de Lyon, Université Claude Bernard Lyon 1, Lyon, France
18. Department of Pediatric Neurology, Children’s Hospital Datteln, University Witten/Herdecke, Witten, Germany
19. Children’s Neurosciences, Evelina London Children's Hospital at Guy’s and St Thomas’ National Health Service Foundation Trust, King’s Health Partners Academic Health Science Centre, London, United Kingdom
20. Faculty of Life Sciences and Medicine, King’s College London, London, United Kingdom