Guo, Yuntao
Wang, Lin
Li, Suike
Chen, Zhi
Cheng, Yin
Funding for this research was provided by:
National Natural Science Fund of China (71172123)
Natural Science Basic Research Plan in Shaanxi Province of China (2015JM7382)
Social Science Foundation in Shaanxi Province of China (2015R005)
Soft Science Research Plan in Shaanxi Province of China (2015KRM039)
Article History
First Online: 11 June 2018
Compliance with ethical standards
:
: The authors declare that there is no conflict of interest regarding the publication of this paper.