Funding for this research was provided by:
the National Natural Science Foundation of China (61862026)
the Natural Science Foundation of Jiangxi, China (20181BAB202008)
Article History
Received: 4 May 2019
Accepted: 16 July 2019
First Online: 25 July 2019
Ethics approval and consent to participate
: Not applicable.
: Not applicable.
: The authors declare that they have no competing interests.