- Correspondence to Dr Nikolaos Scarmeas, Department of Neurology, Columbia University Medical Center, Sergievsky Center, 622 West 168th street, PH 19th floor, New York, NY 10032, USA;
- Received 11 March 2013
- Accepted 20 March 2013
- Published in print 1 December 2013.
- Published online 13 November 2013.
- Published first 3 June 2013.
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