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Authors
Wang, Qin-Qing
Lu, Yi
Ren, Zi-Yan
Chi, Zhe
Liu, Guang-Lei
Chi, Zhen-Ming
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Funding
Funding for this research was provided by:
National Natural Science Foundation of China (31561163001)
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Article History
Received: 10 August 2016
Revised: 6 September 2016
Accepted: 9 September 2016
First Online: 15 September 2016
Compliance with ethical standards
:
: The authors declare no conflict of interests.
Free to read: This content has been made available to all.
