1. Sobell Department of Motor Neuroscience and Movement Disorders; UCL Institute of Neurology; University College London; London United Kingdom
2. Department of Neurology; University Medical Center Hamburg-Eppendorf (UKE); Hamburg Germany
3. Department of Paediatric and Adult Movement Disorders and Neuropsychiatry; Institute of Neurogenetics; University of Lübeck; Lübeck Germany
4. Reta Lilla Weston Laboratories and Departments of Molecular Neuroscience; UCL Institute of Neurology; Queen Square London United Kingdom
5. Department of Neurology and Laboratory of Neuroscience; IRCCS Istituto Auxologico Italiano; Università degli Studi di Milano; Milan Italy
6. Department of Pathophysiology and Transplantation; “Dino Ferrari” Center; Università degli Studi di Milano; Milan Italy
7. MRC Centre for Neuromuscular Diseases; University College London; London United Kingdom