Funding for this research was provided by:
National Natural Science Foundation of China (31701876)
Fundamental Research Funds for the Central Universities (XDJK2019AA001, XDJK2011D011)
Innovation Research Group Funds for Chongqing Universities (CXQT19005)
Chongqing Science & Technology Bureau (cstc2018jscx-mszdX0054)
Text and Data Mining valid from 2020-02-24
Received: 16 November 2019
Accepted: 13 February 2020
First Online: 24 February 2020
Ethics approval and consent to participate
: Not applicable.
: All authors have consented to publication of this article.
: The authors declare that they have no competing interests.