1 University College London Stroke Research Centre, Department of Brain Repair and Rehabilitation, University College London Institute of Neurology, London WC1B 3EE, UK. Electronic address: duncan.wilson@ucl.ac.uk.
2 School of Clinical Sciences, Centre for Clinical Brain Sciences, Division of Clinical Neurosciences, University of Edinburgh, Edinburgh, UK.
3 Department of Neurology, Donders Institute for Brain Cognition & Behaviour, Center for Neuroscience, Radboud University Medical Center, Nijmegen, Netherlands; Department of Neurology and Neurosurgery, Brain Center Rudolf Magnus, University Medical Center Utrecht, Utrecht, Netherlands.
4 University of Birmingham Centre for Cardiovascular Sciences, City Hospital, Birmingham, UK; Department of Clinical Medicine, Aalborg Thrombosis Research Unit, Aalborg University, Aalborg, Denmark.
5 University College London Stroke Research Centre, Department of Brain Repair and Rehabilitation, University College London Institute of Neurology, London WC1B 3EE, UK.