1. Mental Health and Clinical Neurosciences, School of Medicine, University of Nottingham, Nottingham, UK
2. Multiple Sclerosis Patient and Public Involvement Group, Nottingham, UK
3. School of Health Sciences, University of Nottingham, Nottingham, UK
4. Swansea Centre for Health Economics, College of Human and Health Sciences, Swansea University, Swansea, UK
5. Department of Neurology, Nottingham University Hospitals NHS Trust, Nottingham, UK
6. Institute of Mental Health, Nottinghamshire Healthcare NHS Trust, Nottingham, UK