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Authors
Nie, Zhihong
Liang, Zhengyu
Wang, Xiang
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Funding
Funding for this research was provided by:
National Natural Science Foundation of China (51478481)
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Article History
Received: 4 September 2017
First Online: 19 April 2018
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.
