1. Molecular & Clinical Sciences Research Institute St George's University of London London UK
2. Department of Neurology St George's University Hospitals NHS Foundation Trust London UK
3. Department of Neuroradiology St George's University Hospitals NHS Foundation Trust London UK
4. Department of Neuropsychology St George's University Hospitals NHS Foundation Trust London UK
5. South London Stroke Research Network London UK
6. Department of Neurology and Neurovascular Research Unit Herlev Gentofte Hospital Hellerup Denmark
7. Department of Medicine Royal College of Surgeons in Ireland Beaumont Hospital Dublin Ireland
8. Mental Health Centre University of Copenhagen Glostrup Denmark
9. Robertson Centre for Biostatistics University of Glasgow Glasgow UK