1. Department of Neurology; Hospital Clinic, University of Barcelona and August Pi i Sunyer Institute for Biomedical Research (IDIBAPS); Barcelona Spain
2. Department of Neurology; Erasmus Medical Center; Rotterdam the Netherlands
3. Institute of Neurology, Medical University of Vienna; Vienna Austria
4. Department of Neurology; Kitasato University School of Medicine; Kanagawa Japan
5. Department of Neurology; University Medical Center Hamburg-Eppendorf; Hamburg Germany
6. Department of Neurology and Neurosciences; Hospital of the University of Pennsylvania, Perelman School of Medicine, University of Pennsylvania; Philadelphia PA
7. Department of Pediatrics; McMaster Children's Hospital, McMaster University; Hamilton Ontario Canada
8. Partners Pediatric Multiple Sclerosis Center; Department of Child Neurology; Massachusetts General Hospital; Boston MA
9. Pediatric Multiple Sclerosis and Related Disorders Clinic; Boston Children's Hospital; Boston MA
10. Department of Neurology; Pali Momi Medical Center; Aiea HI
11. Department of Neurology; Yokosuka Kyosai Hospital; Kanagawa Japan
12. Department of Neurology; Sakai Hospital, Kinki University Faculty of Medicine; Sakai Japan
13. Department of Neurology; Dayanand Medical College; Ludhiana India
14. Department of Clinical and Experimental Epilepsy; University College London; London United Kingdom
15. Department of Neurology; University Hospital of Bellvitge; Barcelona Spain
16. Department of Neurology; National Defense Medical College; Tokorozawa Japan
17. Department of Pediatrics; Pontifical Catholic University of Chile; Santiago Chile
18. Department of Neurology; Haga Hospital; the Hague the Netherlands
19. Medical Safety Management Center; University of Tokyo Hospital; Tokyo Japan
20. Clinical Department of Neurology; Innsbruck Medical University; Innsbruck Austria
21. Catalan Institution for Research and Advanced Studies (ICREA); Barcelona Spain