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Authors
Liu, Jie
Luo, Majing
Sheng, Yue
Hong, Qiang
Cheng, Hanhua
Zhou, Rongjia https://orcid.org/0000-0002-9701-8009
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Article History
Received: 18 December 2014
Accepted: 24 March 2015
First Online: 6 May 2015
Competing interests
: The authors declare no competing financial interests.
