1. King's College Hospital NHS Foundation Trust; Department of Neurology; 9th floor Ruskin Wing Denmark Hill London UK SE5 9RS
2. King’s College London; Department of Basic and Clinical Neuroscience, Institute of Psychiatry, Psychology and Neuroscience; London UK
3. UCL Institute of Neurology and National Hospital for Neurology and Neurosurgery; MRC Centre for Neuromuscular Diseases; Queen Square London UK WC1N 3BG
4. National Hospital for Neurology and Neurosurgery; Queen Square London UK WC1N 3BG
5. Morriston Hospital; Department of Neurology; Swansea UK SA6 6NL
6. Leiden University Medical Centre; Department of Neurology; Leiden Netherlands
7. University Hospital of Wales; Neurology; Heath Park Cardiff UK CF4 6LT