1. Queen Square Centre for Neuromuscular Diseases, National Hospital for Neurology and Neurosurgery, UCLH NHS Trust, London, UK
2. Department of Neuromuscular Diseases, UCL Institute of Neurology, London, UK
3. Faculty of Health, Social Care and Education, St. George’s University of London, London, UK
4. Faculty of Health, Social Care and Education, Kingston University, London, UK
5. Centre for Movement, Occupational and Rehabilitation Sciences, Oxford Brookes University, Oxford, UK
6. Department of Mathematics and Statistics, University of Lancaster, Lancaster, UK
7. MRC Biostatistics Unit, University of Cambridge, Cambridge, UK
8. School of Health Professions, Plymouth University, Plymouth, UK
9. Department of Physiotherapy and Paramedicine, Glasgow Caledonian University, Glasgow, UK
10. Centre for Trials Research, Cardiff University, Cardiff, UK
11. Institute of Neuroscience, Newcastle University, Newcastle, UK