Funding for this research was provided by:
National Natural Science Foundation of China (71601107, 71671106)
State Key Program in the Major Research Plan of National Natural Science Foundation of China (91546202)
Shanghai Pujiang Program (15PJC051)
Program for Innovative Research Team of Shanghai University of Finance and Economics
Article History
Received: 27 February 2017
Revised: 1 December 2017
Accepted: 4 January 2018
First Online: 2 March 2018