RT Journal Article SR Electronic T1 Stroke JF Practical Neurology JO Pract Neurol FD BMJ Publishing Group Ltd SP 263 OP 272 DO 10.1136/jnnp.2008.149401 VO 8 IS 4 A1 C Cordonnier A1 D Leys YR 2008 UL http://pn.bmj.com/content/8/4/263.abstract AB