Funding for this research was provided by:
National Natural Science Foundation of China (No. 31800938)
Natural Science Foundation of Guangdong Province (2018A030313406)
Postdoctoral Research Foundation of China (No. 2018M643038)
the 13th Five-Year Plan of Philosophy and Social Science of Guangzhou (2020GZYB92)
the Key Research Items from Guangzhou University (YK2020025)
Article History
Accepted: 26 June 2021
First Online: 6 July 2021
Declarations
:
: The authors declare that they have no conflicts of interest.
: The investigation was approved by the Guangzhou University Ethics Committee.
: The informed consent was obtained from the participants.
: This manuscript describes original work, has not been published in any language and is not under consideration for publication elsewhere. All the authors have contributed to this study in a meaningful way. The stated order of authorship corresponds to the authors’ relative contribution to the research reported in the manuscript. There are no conflicts of interest to declare.