1. University of Torino Department of Medical Sciences Torino Italy
2. Department of Human Genetics Graduate School of Public Health University of Pittsburgh Pittsburgh Pennsylvania
3. Department of Biomedical Informatics School of Medicine University of Pittsburgh Pittsburgh Pennsylvania
4. Department of Obstetrics Gynecology and Reproductive Sciences University of Pittsburgh Pittsburgh Pennsylvania
5. Department of Pathology University of Pittsburgh School of Medicine Pittsburgh Pennsylvania
6. S.C.D.U. Medical Genetics Az. Osp. Città della Salute e della Scienza Torino Italy
7. Department of Neuroscience Az. Osp. Città della Salute e della Scienza Torino Italy
8. Department of Neurology, Ophthalmology and Genetics, di Bologna Department of Biomedical and NeuroMotor Sciences (DIBINEM) Alma Mater Studiorum Bologna Italy
9. NIH Undiagnosed Diseases Program NIH Office of Rare Disease Research and NHGRI Bethesda Maryland
10. CHU de Clermont‐Ferrand Department of Genetics and Cytogenetics France
11. Neurologie Hopital Caremeau Centre Hospitalo‐Universitaire de Nimes Nimes France
12. University of Bologna IRCCS Istituto delle Scienze Neurologiche di Bologna Department of Biomedical and NeuroMotor Sciences (DIBINEM) Alma Mater Studiorum Italy
13. Hospital de Clínicas de Porto Alegre & Universidade Federal do Rio Grande do Sul Porto Alegre Brazil
14. Nemours Biomedical Research Alfred I. duPont Hospital for Children Wilmington Delaware
15. Department of Medical Genetics Clinics Hospital of Ribeirao Preto University of Sao Paulo Sao Paulo Brazil
16. Institut National de la Santé et de la Recherche Médicale (INSERM) – Paris Diderot Sorbonne Paris Cité University, Robert Debré Hospital Paris France
17. Assistance Publique des Hopitaux de Paris Reference Center for Rare Diseases “Leukodystrophies” Child Neurology and Metabolic Disorders Department Paris France
18. Department of Neuroscience Neurology Uppsala University Uppsala Sweden
19. Parkinson's disease and Movement Disorders Clinic Department of Neurology Chaim Sheba Medical Center Tel Aviv Israel
20. Sackler Faculty of Medicine Tel Aviv University Tel Aviv Israel
21. Department of Neurology University of Heidelberg Heidelberg Germany
22. Dept. of Neurology Klinikum Ludwigshafen Ludwigshafen Germany
23. Dept. of Neurology Friedrich‐Baur‐Institute Ludwig‐Maximilians‐University Munich Germany
24. German Center for Vertigo and Balance Disorders Munich Germany
25. DZNE – German Center for Neurodegenerative Diseases Munich Germany
26. German Network for Mitochondrial Disorders (mitoNET) Germany
27. Department of Neurology David Geffen School of Medicine University of California Los Angeles California
28. Montreal Neurological Institute McGill University Montreal Canada
29. Department of Neurological Sciences CHA – Hôpital de l'Enfant‐Jésus Quebec City Canada
30. Department of Neurology Childrens National Medical Center Washington District of Columbia
31. Dept. of Immunology Genetics and Pathology Section of Clinical Genetics The Rudbeck laboratory Uppsala University Children's Hospital Uppsala Sweden
32. University of Delaware Department of Biology Newark Delaware
33. Thomas Jefferson University Jefferson Medical College Philadelphia Pennsylvania