Liu, Yu
Zhao, Liang
Huang, Xiaoyan
Deng, Hang
Funding for this research was provided by:
Guangxi College Enhancing Youth’s Capacity Project (2017KY0599)
Scientific Research Development Fund of Young Researchers of Guangxi University of Finance and Economics (2017QNB18)
Article History
Received: 14 June 2018
Accepted: 11 July 2018
First Online: 29 August 2018
Competing interests
: The authors declare that there is no conflict of interests.