Fu, Yiping
Chen, Zhihua
Liu, Zhibing
Yang, Shanxue
Funding for this research was provided by:
National Natural Science Foundation of China (71771166, 71771165)
National Natural Science Foundation of China (11761025)
Yanta Scholars Foundation of Xi’an University of Finance and Economics
Tianjin Natural Science Foundation (18JCQNJC04200)
Article History
First Online: 3 January 2019
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.
: This article does not contain any studies with human or animal participants performed by any of the authors.
: Informed consent is obtained from all individual participants included in the study.