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Authors
Tao, Jifang
Luo, Yu
Wang, Li
Cai, Hong
Sun, Tao
Song, Junfeng
Liu, Hui
Gu, Yuandong
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Article History
Received: 21 March 2016
Accepted: 21 June 2016
First Online: 15 July 2016
Competing interests
: The authors declare no competing financial interests.
