Chen, Chen https://orcid.org/0000-0003-0019-0193
Wei, Yu
Funding for this research was provided by:
2015 Annual Natural Science Foundation (key projects) of the Department of Education of Sichuan Province (15ZA0383)
National Natural Science Foundation of China (71371157, 71671145)
Ministry of Education of Humanities and Social Sciences Research Project (14YJC790008)
Humanities and Social Science Fund of the Ministry of Education (15YJA790031, 16YJA790062)
Young Scholar Fund of the Science & Technology Department of Sichuan Province (2015JQO010)
Article History
First Online: 21 November 2018
Compliance with ethical standards
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: I declare that I have no conflict of interests, financially or non-financially, directly or indirectly related to our work. There is no professional or other personal interest of any nature or kind in any product, service and/or company that could be construed as influencing the position presented in, or the review of, the manuscript entitled.