Funding for this research was provided by:
National Natural Science Foundation of China (61472267)
Primary Research & Development Plan of Jiangsu Province (BE2017663)
Jiangsu Key Disciplines of Thirteen Five-Year Plan (20168765)
Text and Data Mining valid from 2019-04-08
Received: 22 July 2018
Accepted: 5 March 2019
First Online: 8 April 2019
Compliance with Ethical Standards
: The authors declare that they have no conflict of interest.
: This article does not contain any studies with human participants or animals performed by any of the authors.