- Correspondence to Professor Peter M Rothwell, Department of Clinical Neurology, Stroke Prevention Research Unit, John Radcliffe Hospital, Level 6, West Wing, Headley Way, Oxford OX3 9DU, UK;
- Received December 2, 2008
- Revised March 31, 2009
- Accepted June 8, 2009
- First published August 16, 2009.
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