1. Division of Stroke Medicine, University of Nottingham, Nottingham, UK
2. Department of Neurology, Bispebjerg Hospital, Copenhagen, Denmark
3. National Stroke Research Institute, Heidelberg, Australia
4. Department of Neurology, University of Helsinki, Helsinki, Finland
5. Acute Stroke Unit, Western Infirmary, Glasgow, UK
6. Department of Neurology, Gentofte University Hospital, Hellerup, Denmark
7. The Copenhagen Stroke Unit, Frederiksberg Hospital, Copenhagen, Denmark
8. Department of Clinical Neurosciences, Western General Hospitals, Edinburgh, UK
9. Department of Neurology, Karolinska Hospital, Stockholm, Sweden