Funding for this research was provided by:
National Social Science Foundation of China (19BYY079)
Humanities and Social Sciences Projects of MOE of PRC (18YJA740004)
Hunan Provincial Social Science Foundation (16YBA083)
Article History
Received: 30 July 2019
Accepted: 21 October 2020
First Online: 6 January 2021
Compliance with ethical standards
:
: Author Tao Zeng declares that she has no conflict of interest. Author Yating Mu declares that she has no conflict of interest. Author Taoyan Zhu declares that she has no conflict of interest.
: All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki Declaration and its later amendments or comparable ethical standards.
: Informed consent was obtained from all individual participants included in the study.