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Authors
Li, Chi-Shan
Tang, Fei
Zhang, Peng
Jiang, Taijiao
Saunders, Thomas L
Zheng, Pan
Liu, Yang
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Article History
Received: 12 October 2015
Revised: 25 November 2015
Accepted: 25 November 2015
First Online: 11 April 2016
Competing interests
: The authors declare no conflict of interest.
