Funding for this research was provided by:
National Natural Science Foundation of China (21676189)
the National Key Research and Development program (2018YFA0902200)
Text and Data Mining valid from 2020-02-13
Received: 17 December 2019
Accepted: 5 February 2020
First Online: 13 February 2020
Ethics approval and consent to participate
: This article does not contain any studies with human participants or animals performed by any of the authors.
: All authors consent to publish this manuscript.
: The authors declare that they have no competing interests.