1. Department of Neurology Peking University First Hospital 8 Xishiku Street, Xicheng District Beijing 100034 China
2. Beijing Key Laboratory of Neurovascular Disease Discovery Beijing 100034 China
3. Department of Neuromuscular Diseases UCL Queen Square Institute of Neurology Queen Square London UK
4. MRC Centre for Neuromuscular Diseases UCL Queen Square Institute of Neurology Queen Square London UK
5. Queen Square Brain Bank for Neurological Disorders London UK
6. Department of Neurodegenerative Disease UCL Queen Square Institute of Neurology Queen Square London UK
7. Oxford Muscle Service John Radcliffe Hospital Oxford UK
8. Department of Neuropathology Royal Victoria Hospital Belfast Northern Ireland
9. Department of Neurology Belfast City Hospital Belfast BT9 7AB UK
10. Department of Genetic Medicine Belfast City Hospital Belfast BT9 7AB UK
11. Neuromuscular and Rare Diseases Unit Department of Neuroscience IRCCS Foundation Ca’ Granda Ospedale Maggiore Policlinico Dino Ferrari Centre University of Milan Milan Italy
12. Neuromuscular Diseases and Neuroimmunology Unit Fondazione IRCCS Isitituto Neurologico C. Besta Milano Italy
13. Neurosciences Group Nuffield Department of Clinical Neurosciences Weatherall Institute of Molecular Medicine University of Oxford Oxford UK
14. Neurogenetics Laboratory UCL Queen Square Institute of Neurology Queen Square WC1N 3BG London UK