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Authors
Wu, Ying http://orcid.org/0000-0002-0549-8923
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Funding
Funding for this research was provided by:
The National Social Science Fund of China (16BSH124)
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Article History
Received: 3 December 2018
Accepted: 17 May 2019
First Online: 5 June 2019
Competing interests
: The author declares that she has no competing interests.
