1. Department of Neuromuscular Disorders UCL Queen Square Institute of Neurology London WC1N 3BG UK
2. Neurological Diseases Group, Postgraduate Program of Internal Medicine Hospital de Clínicas, Federal University of Paraná Curitiba Paraná Brazil
3. Neurogenetics Unit, 1st Department of Neurology Eginition Hospital, National and Kapodistrian University of Athens Athens Greece
4. 2nd Department of Radiology Medical School, Attikon Hospital, National and Kapodistrian University of Athens Athens Greece
5. Institute of Neurology, Federal University of Rio de Janeiro Rio de Janeiro Brazil
6. Genetika Laboratoty Curitiba Paraná Brazil
7. Department of Pediatric Neurology Indira Gandhi Institute of Child Health Bangalore India
8. NIHR Biomedical Research Centre, Wellcome Centre for Human Genetics University of Oxford Oxford UK