1. Institute for Applied Health Research, College of Medical and Dental Sciences, University of Birmingham, Birmingham, UK
2. Department of Neurology, Sandwell and West Birmingham Hospitals NHS Trust, City Hospital, Birmingham, UK
3. Birmingham Clinical Trials Unit, College of Medical and Dental Sciences, University of Birmingham, Birmingham, UK
4. Cancer Research UK Clinical Trials Unit, College of Medical and Dental Sciences, University of Birmingham, Birmingham, UK
5. Rehabilitation and Ageing, Queen’s Medical Centre, University of Nottingham, Nottingham, UK
6. Primary Care Clinical Sciences, College of Medical and Dental Sciences, University of Birmingham, Birmingham, UK
7. Primary Care and Population Sciences, Faculty of Medicine, University of Southampton, Southampton, UK
8. University of East Anglia, Norwich, UK
9. Academic Department of Physiotherapy, Faculty of Life Sciences and Medicine, King’s College London, London, UK