1. Unit of Pediatric Movement Disorders; Hospital Sant Joan de Déu; Barcelona Spain
2. Unit of Genetics and Genomics of Neuromuscular and Neurodegenerative Disorders; Centro de Investigación Príncipe Felipe; Valencia Spain
3. Neurology Department, Hospital Clínic de Barcelona, Institut d'Investigacions Biomediques IDIBAPS. Barcelona, Catalonia; Centro de Investigación Biomédica en Red-Neurodegenerativas (CIBERNED); Madrid Spain
4. Pediatric Neurology Department; Centro Materno-Infantil Centro Hospitalario do Porto; Porto Portugal
5. Pediatric Neurology Department; Complejo Hospitalario de Navarra; Navarrabiomed Pamplona Spain
6. Pediatric Neurology Department; Hospital Universitario Politécnico La Fe; Valencia Spain
7. Neurology Department; Complejo Hospitalario de Navarra; Pamplona Spain
8. Pediatric Neurology Department; Hospital Universitario Virgen del Rocío; Sevilla Spain
9. Pediatric Neurology Department; Hospital Infantil Universitario Niño Jesús; Madrid Spain
10. Pediatric Neurology Department; Hospital Torrecárdenas; Almería Spain
11. Neurology Department; Hospital Santa María; Lérida Spain
12. Neurology Department; Hospital de Mérida; Extremadura Spain
13. Children's Neurosciences, Evelina London Children's Hospital; Guy's and St Thomas' NHS Foundation Trust; London United Kingdom
14. Department of Pediatric Neuroscience; Fondazione IRCCS “C. Besta”; Milano Italy
15. Molecular Genetics Department, Hospital Sant Joan de Déu, Barcelona. CIBERER; Instituto de Salud Carlos III; Madrid Spain
16. Pediatric Neurology Department; Hospital Ramón y Cajal; Madrid Spain
17. Neurology Department; Complejo Asistencial Universitario de Palencia; Palencia Spain
18. Neurology Department; Fundación Jiménez Díaz; Madrid Spain
19. Neurology Department; Hospital de Alcorcón; Madrid Spain
20. Neurology Department; Hospital Central de Asturias; Oviedo Spain
21. Neurology Department; Centro Hospitalar e Universitário de Coimbra; Coimbra Portugal
22. Clinical Pharmacology Unit, Instituto de Medicina Molecular and Department of Neurosciences, Service of Neurology; Hospital Santa Maria; Lisboa Portugal
23. Laboratory of Clinical Pharmacology and Therapeutics; Lisbon Faculty of Medicine; Lisbon Portual
24. Neurology Department; Hospital de Santo Espirito; Ilha Terceira Portugal
25. Neurology Department; Hospital Fernando Fonseca; Lisboa Portugal
26. Pediatric Department; Hospital Central de Funchal; Funchal Portugal
27. Neurology Department; Centro Hospitalar Porto; Porto Portugal
28. Second Department of Neurology, Medical School; National and Kapodistrian University of Athens; Athens Greece
29. Parkinson's Disease and other Movement Disorders Department; HYGEIA Hospital; Athens Greece
30. Statistical Department; Sant Joan de Déu Fundation; Barcelona Spain
31. National Center of Epidemiology and CIBERNED; Institute of Health Carlos III; Madrid Spain
32. Pediatric Neurology Unit, First Department of Pediatrics, Medical School; National and Kapodistrian University of Athens, Hospital Agia Sofía; Athens Greece
33. CIBERER; Instituto de Salud Carlos III; Madrid Spain