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Authors
Liu, Hong https://orcid.org/0000-0003-1058-4831
Ai, Chunmei
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Funding
Funding for this research was provided by:
Liaoning Province Social Science Planning Fund Project (L16BGL032)
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Article History
Received: 16 November 2017
Revised: 9 January 2018
Accepted: 11 January 2018
First Online: 29 January 2018
