Document is current
Any future updates will be listed below
-
Authors
Li, Zhonglu
Qiu, Zeqi
-
Funding
Funding for this research was provided by:
Ministry of Education in China Fund of Humanities and Social Sciences for Youth Scholars Project (No.17YJC840024)
- License Information
-
More Information
Article History
Received: 7 June 2018
Accepted: 13 September 2018
First Online: 2 October 2018
Competing interests
: The authors declare that they have no competing interests.
: Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.
