Yang, Yuan
Tang, Min
Funding for this research was provided by:
National Natural Science Foundation of China (71402122, 71774106)
Program for Innovative Research Team of Shanghai University of Finance and Economics (2014110344)
Article History
Received: 17 July 2017
Accepted: 30 May 2018
First Online: 7 June 2018
Compliance with Ethical Standards
:
: All 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.