Ren, Lingling
Xu, Yuanyuan
Guo, Xin
Zhang, Jing
Wang, Hong
Lou, Xiaomin
Liang, Jianping
Tao, Fangbiao
Funding for this research was provided by:
National Natural Science Foundation of China (81402697, 81302449)
Article History
Received: 24 January 2018
Accepted: 1 October 2018
First Online: 16 October 2018
Ethics approval and consent to participate
: This study approved by the Ethics Committee of Anhui Medical University. Written consent from all participants and parents were obtained before investigation. Participants and their parents were informed that participation was voluntary and their information would be used for research purposes only and treated confidentially, and of the possibility of withdrawing during any stage of the study.
: Not applicable.
: The authors declare that they have no competing interests.
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