Zhu, Xiaoliang https://orcid.org/0000-0002-8493-1931
Chen, Zijian https://orcid.org/0000-0002-6130-429X
Funding for this research was provided by:
National Key R&D Program of China (2018YFB1004504)
Humanities and Social Sciences of Ministry of Education of China (18YJAZH152)
Basic ScientificResearch of Chinese Central University (CCNU18TS005)
Guizhou University of Finance and Economics (2018XYB09)
Article History
First Online: 3 May 2019
Compliance with ethical standards
:
: Xiaoliang Zhu declares that he has no conflict of interest, and Zijian Chen declares that he has no conflict of interest.