- Correspondence to Professor B R Bloem, Department of Neurology (HP 935), Donders Centre for Brain, Cognition and Behaviour, Radboud University Nijmegen Medical Centre, PO Box 9101, 6500 HB Nijmegen, The Netherlands;
- Received February 2, 2009
- Revised April 29, 2009
- Accepted April 30, 2009
- First published June 21, 2009.
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