1. Department of Clinical Neurosciences Psychiatry, Pediatrics and Community Health Sciences, University of Calgary Calgary AB Canada
2. Department of Clinical and Movement Neuroscience UCL Queen Square Institute of Neurology London UK
3. Department of Neurology Faculty of medicine, Ain Shams Univeristy Cairo Egypt
4. Pediatric Neurology Unit, Postgraduate Institute of Medical Education and Research Chandigarh India
5. Department of Neurodegenerative Diseases Instituto Nacional de Ciencias Neurologicas and School of Medicine, Universidad Nacional Mayor de San Marcos Lima Peru
6. Department of Neurology Boston Children's Hospital, Harvard Medical School Boston MA USA
7. Departments of Neurosciences and Pediatrics UC San Diego San Diego CA USA
8. Children's Neurosciences, Complex Motor Disorders Service (CMDS) Evelina London Children's Hospital, Guy's and St Thomas’ NHS Foundation Trust (GSTT), and Women and Children's Health Institute Faculty of Life Sciences & Medicine, Kings Health Partners, King's College London London UK
9. Department of Neurology University of Rochester Rochester NY USA
10. Institute of Systems Motor Science, University of Lübeck Lübeck Germany
11. Department of Paediatric Neurology San Borja Arriaran Hospital. University of Chile Santiago Chile
12. Pediatric Neuroscience Department Fondazione IRCCS Istituto Neurologico “C Besta” Milan Italy
13. Department of Pediatric Neurology Hospital Universitari Vall d'Hebrón, Universitat Autònoma de Barcelona. Centre for Biomedical Research of Rare Diseases (CIBERER), ISCIII Madrid Spain
14. FCPS, Department of Neurology Columbia University Irving Medical Center/New York Presbyterian Hospital New York NY USA
15. Department of child neurology Hedi Chaker Hospital, LR10ES15, Sfax Medical School, University of Sfax Tunisia Sfax Tunisia
16. Movement Disorders Clinic, Assuta Ashdod Ahdod Israel
17. Department of Neurology University of Campinas (UNICAMP) Campinas Brazil
18. Segawa Memorial Neurological Clinic for Children Tokyo Japan
19. Children's Hospital at Westmead Clinical School, University of Sydney Sydney NSW Australia
20. Movement Disorders Unit, Department of Neurology Westmead Hospital & Sydney Medical School, University of Sydney Sydney NSW Australia
21. Developmental Neurosciences Zayed Centre for Research into Rare Disease in Children, GOS‐Institute of Child Health, UCL London UK
22. Sorbonne University Paris Brain Institute, Assistance Publique—Hôpitaux de Paris, DMU Neurosciences Paris France