- Correspondence to Dr Karl Ng, Department of Neurology and Clinical Neurophysiology, Royal North Shore Hospital, St Leonards, NSW 2065, Australia;
- Received 24 March 2009
- Revised 4 May 2009
- Accepted 12 May 2009
- Published in print 1 August 2010.
- Published online 3 August 2010.
- Published first 11 June 2010.
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