- Correspondence to Dr Massimo Filippi, Neuroimaging Research Unit, Institute of Experimental Neurology, Division of Neuroscience, Scientific Institute and University Ospedale San Raffaele, Via Olgettina 60, Milan 20132, Italy;
- Received January 14, 2010
- Revised February 22, 2010
- Accepted February 25, 2010
- First published July 26, 2010.
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