Funding for this research was provided by:
National Natural Science Foundation of China (61775055, 61505052, 61764005, 11804093)
Natural Science Foundation of Jiangxi Province (20181BAB201013, 20192BAB212003)
Text and Data Mining valid from 2019-11-04
Received: 7 July 2019
Accepted: 12 September 2019
First Online: 4 November 2019
: The authors declare that they have no competing interests.