Tang, Xu
Ouyang, Qiuli
Jing, Guoxing
Shao, Xingfeng
Tao, Nengguo
Funding for this research was provided by:
Research Foundation of Education Bureau of Hunan Province (15A181)
Natural Science Foundation of Hunan Province (2017JJ2247)
Article History
Received: 27 October 2017
Accepted: 14 January 2018
First Online: 19 January 2018
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.