Funding for this research was provided by:
National Natural Science Foundation of China (71901001, 71871001, 71771001, 71701001, 71901088, 11901150)
Natural Science Foundation for Distinguished Young Scholars of Anhui Province (1908085J03)
Construction Fund for Scientific Research Conditions of Introducing Talents in Anhui University (S020118002/085)
Key Research Project of Humanities and Social Sciences in Colleges and Universities of Anhui Province (SK2019A0013)
Article History
Received: 25 March 2019
Accepted: 22 November 2019
First Online: 2 December 2019
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.