1. Department of Clinical Neurophysiology King's College Hospital London UK
2. Queen Square Centre for Neuromuscular Diseases University College London London UK
3. Department of Clinical Neurophysiology Royal Victoria Infirmary Newcastle Upon Tyne UK
4. Department of Neurology and Neurophysiology, St Thomas' Hospital, Guy's and St Thomas' NHS Foundation Trust and Department of Academic Neurosciences Kings College London London UK
5. Atkinson‐Morley Neuromuscular Centre St George's University Hospitals NHS Foundation Trust London UK