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Authors
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Funding
Funding for this research was provided by:
National Natural Science Foundation of China (31600883, 31600880)
Dalian Science and Technology Burea (2017RQ140)
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Article History
Received: 18 June 2019
Accepted: 3 December 2019
First Online: 16 December 2019
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.
