Dong, Yanhui
Zou, Zhiyong
Yang, Zhaogeng
Wang, Zhenghe
Yang, Yide
Ma, Jun
Dong, Bin
Ma, Yinghua
Arnold, Luke
Funding for this research was provided by:
the National Natural Science Foundation (81673192)
Article History
Received: 22 December 2017
Accepted: 21 March 2018
First Online: 27 April 2018
Ethics approval and consent to participate
: Informed consent was obtained from both parents and students before they participated in the study. The project was approved by the Medical Research Ethics Committee of Peking University Health Science Center (IRB00001052–13082).
: Not applicable.
: The authors declare that they have no competing interests.
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