- Correspondence to Dr Massimo Filippi, Neuroimaging Research Unit, Institute of Experimental Neurology, Scientific Institute and University Ospedale San Raffaele, via Olgettina 60, 20132 Milan, Italy;
- Received July 23, 2009
- Revised November 3, 2009
- Accepted December 8, 2009
- First published April 14, 2010.
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