Funding for this research was provided by:
National Natural Science Foundation of China (81572840, 81572365)
Non-profit Central Research Institute Fund of CAMS (2018RC310011)
Text and Data Mining valid from 2019-09-27
Received: 25 June 2019
Accepted: 23 September 2019
First Online: 27 September 2019
Consent for publication
: All authors approved publication of the manuscript.
: The authors declare that they have no competing interests.