Accepted for Publication: February 28, 2012.
Published Online: May 28, 2012. doi:10.1001/archneurol.2012.459
Author Contributions:Study concept and design: Dassan, Brown, Gregoire, and Werring. Acquisition of data: Dassan. Analysis and interpretation of data: Dassan, Brown, Keir, and Werring. Drafting of the manuscript: Dassan and Werring. Critical revision of the manuscript for important intellectual content: Brown, Gregoire, Keir, and Werring. Statistical analysis: Dassan and Werring. Obtained funding: Brown. Administrative, technical, and material support: Gregoire, Keir, and Werring. Study supervision: Brown and Werring.
Financial Disclosure: Dr Werring is supported by a Clinical Senior Lectureship award from the Higher Education Funding Council for England and by funding from the British Heart Foundation and Stroke Association.
Funding/Support: This study was supported by a project grant from the Stroke Association. Dr Brown's Chair in Stroke Medicine is supported by the Reta Lila Weston Trust for Medical Research. Part of this work was undertaken at UCL Hospital/UCL, which received a proportion of funding from the Department of Health's National Institute for Health Research Biomedical Research Centre funding scheme.
Additional Contributions: Andreas Charidimou, MSc, Clinical Research Fellow at UCL Institute of Neurology, provided the illustrations.