- Correspondence to Professor George Ebers, University Department of Clinical Neurology, 3rd Floor, West Wing, John Radcliffe Hospital, Oxford OX3 9DU, UK;
- Received 24 December 2009
- Accepted 25 February 2010
- Published in print 1 August 2010.
- Published online 3 August 2010.
- Published first 19 June 2010.
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