Funding for this research was provided by:
National Natural Science Foundation of China (No. 11804077, No. 11774078)
Innovation Scientists and Technicians Troop Construction Projects of Henan Province (No. 10094100510025)
Text and Data Mining valid from 2019-09-09
Received: 20 June 2019
Accepted: 19 August 2019
First Online: 9 September 2019
: The authors declare that they have no competing interests.