Bai, LiBiao
Chen, Hongliang
Gao, Qi
Luo, Wei
Funding for this research was provided by:
National Natural Science Foundation of China (51708039)
Ministry of Education Humanities and Social Sciences Fund (17XJC630001, 15YJC790015)
Soft Science Foundation of Shaanxi Province (2017KRM123)
Social Science Planning Fund of Shaanxi Province (2017S028)
Social Science Planning Fund of Xi’an (17J173, 18Z49)
Fundamental Research Funds for the Central Universities (300102238620, 300102238303)
Article History
First Online: 4 June 2018
Compliance with ethical standards
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: The authors declare that they have no conflict of interest.