1. From the Department of Neurology, University Hospital Knappschaftskrankenhaus Bochum, Ruhr University Bochum, Germany (S.P.)
2. Wissenschaftskolleg zu Berlin–Institute for Advanced Study, Germany (S.P., A.M.B.)
3. Centre for Clinical Brain Sciences, University of Edinburgh, Royal Infirmary of Edinburgh, United Kingdom (J.S.)
4. Acute Stroke Programme, Radcliffe Department of Medicine, University of Oxford, United Kingdom (A.M.B.).