Funding for this research was provided by:
National Natural Science Foundation of China (31801470)
Undergraduate Training Program for Innovation and Entrepreneurship of Nanchang University (2018303)
Undergraduate Training Program for Innovation and Entrepreneurship of Nanchang University (20190402112)
Article History
Received: 26 December 2018
Accepted: 26 June 2019
First Online: 8 July 2019
Compliance with ethical standards
:
: The authors have no conflict of interest.