- Correspondence to Yu-Tzu Wu, REACH: The Centre for Research in Ageing and Cognitive Health, Department of Psychology, College of Life and Environmental Sciences, University of Exeter, Washington Singer Building, Perry Road, Exeter EX4 4QG, UK ;
- Received January 23, 2017
- Revised March 20, 2017
- Accepted May 12, 2017
- First published July 24, 2017.
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