1. Department of Neuromuscular Diseases UCL Queen Square Institute of Neurology London UK
2. MRC Centre for Neuromuscular Diseases UCL Queen Square Institute of Neurology and National Hospital for Neurology and Neurosurgery London UK
3. AGE Research Group, NIHR Newcastle Biomedical Research Centre Newcastle upon Tyne Hospitals NHS Foundation Trust and Newcastle University Newcastle upon Tyne UK
4. Guy's and St Thomas' NHS Foundation Trust London UK
5. Department of Neuropathology Great Ormond Street Hospital London UK
6. UCL Great Ormond Street Institute of Child Health London UK
7. School of Human Sciences University of Western Australia Perth Australia
8. Atkinson Morley Neuromuscular Centre, Department of Neurology St Georges University Hospitals NHS Foundation Trust London UK