Yu, Haiqing
Lu, Jiao
Jia, Pengli
Liu, Can
Cheng, Jingmin
Funding for this research was provided by:
The ministry of education's humanities and social sciences research project (No. 18YJA630015)
Article History
Received: 13 November 2018
Revised: 6 March 2019
Accepted: 21 March 2019
First Online: 12 April 2019
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.
: No additional data are available.