Funding for this research was provided by:
National Natural Science Foundation of China (51564007)
Natural Science Foundation of Guangxi Province (2017GXNSFAA198133)
Guilin University of Electronic Technology (16YJPYSS01)
Article History
Received: 5 January 2019
Accepted: 24 July 2019
First Online: 12 August 2019
Compliance with Ethical Standards
:
: On behalf of all authors, the corresponding author states that there is no conflict of interest.