Funding for this research was provided by:
Ministry of Science and Technology of the People's Republic of China (2018YFD0501005)
Department of Science and Technology of Sichuan Province (2016NYZ0052)
Text and Data Mining valid from 2020-02-21
Received: 24 July 2019
Accepted: 4 February 2020
First Online: 21 February 2020
: The authors declare no competing interests.