Funding for this research was provided by:
Normal Program Frontiers and Applications Research of CSTC (cstc2016jcyjA0136)
Special Project of Science and Technology Innovation for Social Undertaking and People’s Livelihood Guarantee of CSTC (cstc2017shms-xdny80074)
Text and Data Mining valid from 2019-10-23
Received: 2 June 2019
Accepted: 20 September 2019
First Online: 23 October 2019
Ethics approval and consent to participate
: Not applicable.
: All authors of this article have consented for publication.
: The authors declare that they have no competing interest.