1. Therapies & Rehabilitation, University College London Hospitals NHS Foundation Trust, London, UK
2. Department of Haematology, UCL Cancer Institute, University College London, London, UK
3. UCL Department of Behavioural Science and Health, University College London, London, UK
4. Queens Square Centre for Neuromuscular Diseases, National Hospital for Neurology & Neurosurgery, UCLH NHS Trust/UCL Institute of Neurology, University College London, London, UK
5. Department of Haematology, University College London Hospitals NHS Foundation Trust, London, UK