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Authors
Li, Sheng-Nan http://orcid.org/0000-0002-8533-010X
Wu, Jia-Fa
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Funding
Funding for this research was provided by:
National Natural Science Foundation of China (81700775)
Ph.D. Programs Foundation of Henan Polytechnic University (B2017-61)
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Article History
Received: 14 August 2019
Revised: 18 December 2019
Accepted: 5 January 2020
First Online: 29 January 2020
Ethics approval and consent to participate
: Not applicable.
: Not applicable.
: The authors declare that they have no competing interests.
