1. Nuffield Department of Clinical Neurosciences, University of Oxford , Oxford , UK
2. NIHR BioResource, Cambridge University Hospitals NHS Foundation , Cambridge , UK
3. Department of Haematology, University of Cambridge , Cambridge , UK
4. National Hospital for Neurology and Neurosurgery, University College London Hospitals , London , UK
5. Department of Neurology, Royal Free Hospital , London , UK
6. Department of Clinical and Movement Neurosciences, UCL Queen Square Institute of Neurology , London , UK
7. Salford Royal NHS Foundation Trust , Salford , UK
8. King’s College Hospital NHS Foundation Trust , London , UK
9. Wellcome Centre for Mitochondrial Research, Institute of Genetic Medicine, Newcastle University , Newcastle upon Tyne , UK
10. Department of Clinical Neurosciences, University of Cambridge , Cambridge , UK
11. Great Ormond Street Hospital for Children NHS Foundation Trust , London , UK
12. UCL Great Ormond Street Institute of Child Health , London , UK
13. Faculty of Biology, Medicine and Health, School of Biological Sciences, Division of Neuroscience and Experimental Psychology, University of Manchester , Manchester , UK
14. Department of Clinical Neurophysiology, Manchester University NHS Foundation Trust, Manchester Academic Health Science Centre , Manchester , UK
15. Institute of Life Course and Medical Sciences, University of Liverpool , Liverpool , UK
16. Department of Neuromuscular Disease, UCL Queen Square Institute of Neurology and the National Hospital of Neurology and Neurosurgery , London , UK
17. NIHR Oxford Biomedical Research Centre, Oxford University Hospitals Trust , Oxford , UK
18. Wellcome Centre for Human Genetics, University of Oxford , Oxford , UK
19. Oxford Centre for Diabetes, Endocrinology and Metabolism, University of Oxford , Oxford , UK
20. Pain Research, Department of Surgery and Cancer, Faculty of Medicine, Imperial College London , London , UK
21. Pain Medicine, Chelsea and Westminster Hospital NHS Foundation Trust , London , UK
22. Department of Medical Genetics, Cambridge Institute for Medical Research, University of Cambridge , Cambridge , UK
23. Addenbrookes Hospital, Cambridge University Hospitals NHS Foundation Trust , Cambridge , UK