- Correspondence to Mrs Nelleke Tolboom, Department of Neurology & Alzheimer Centre, VU University Medical Centre, PO Box 7057, Amsterdam, 1007 MB, The Netherlands;
- Received 13 September 2009
- Revised 17 December 2009
- Accepted 18 December 2009
- Published in print 1 August 2010.
- Published online 3 August 2010.
- Published first 11 June 2010.
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