Liu, Yan
Fei, Leishi
Sun, Xiaomin http://orcid.org/0000-0002-2773-7761
Wei, Cong
Luo, Fang
Li, Zhongquan
Shen, Liming
Xue, Gang
Lin, Xiuyun
Funding for this research was provided by:
National Natural Science Foundation of China (71101012)
Fundamental Research Funds for the Central Universities
State Scholarship Fund from the China Scholarship Council (201406045033)
Advanced Innovation Center for Future Education at Beijing Normal University
Article History
First Online: 12 January 2018
Compliance with Ethical Standards
:
: The authors declare that they have no conflict of interest.
: All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki Declaration and its later amendments or comparable ethical standards.
: Informed consent was obtained from all individual participants included in the study.