- Correspondence to Nienke Scheltens, Department of Neurology, Alzheimer Center, Neuroscience Campus Amsterdam, VU University Medical Center, P.O. Box 7057, Amsterdam 1007 MB, the Netherlands;
- Received 29 September 2014
- Revised 25 February 2015
- Accepted 26 February 2015
- Published online 14 February 2016.
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