- Correspondence to Dr Joseph GL Lee, Department of Health Education and Promotion, College of Health and Human Performance, East Carolina University, 1000 E. 5th Street, Mail Stop 529, Greenville, NC 27858, USA;
- Received 5 October 2016
- Revised 16 December 2016
- Accepted 10 February 2017
- Published online 1 March 2017.
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