Deng, Yirui
Jiang, Mingyue
Ling, Chen
Funding for this research was provided by:
the Humanities and Social Science Research Project of Shandong Universities (J17RB103)
Shandong Social Science Planning Research Project (19CGLJ31)
Qingdao Social Science Planning Project (QDSKL1801035)
the Fundamental Research Funds for the Central Universities (18CX04004B)
Article History
First Online: 27 June 2019
Compliance with ethical standards
:
: The authors declare that there is no conflict of interests regarding the publication of this paper.