1. Department of Neurology, Institute of Neurological Sciences, Glasgow, UK
2. School of Social and Community Medicine, University of Bristol, Bristol, UK
3. Department of Neurology, Queen’s Medical Centre, Nottingham, UK
4. Clinical Neurosciences, John van Geest Centre for Brain Repair, Cambridge, UK
5. Institute of Neuroscience, University of Newcastle, UK
6. Sobell Department of Motor Neuroscience, UCL Institute of Neurology, London, UK
7. Reta Lila Weston Laboratories, Department of Molecular Neuroscience, UCL Institute of Neurology, London, UK
8. Department of Clinical Neuroscience, UCL Institute of Neurology, London, UK
9. Psychological Medicine and Clinical Neurosciences, MRC Centre for Neuropsychiatric Genetics and Genomics, Cardiff University, Cardiff, UK
10. Department of Molecular Neuroscience, UCL Institute of Neurology, London, UK