- Correspondence to Professor D M Kullmann, UCL Institute of Neurology, Queen Square, London WC1N 3BG, UK;
- Received 16 October 2009
- Revised 19 November 2009
- Accepted 26 November 2009
- Published in print 1 August 2010.
- Published online 3 August 2010.
- Published first 14 June 2010.
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