Hu, Jiajin
Ding, Ning
Yang, Liu
Ma, Yanan
Gao, Ming
Wen, Deliang
Funding for this research was provided by:
National Natural Science Foundation of China (G040605)
Shenyang science and technology bureau (18-400-4-10)
Article History
Received: 27 February 2019
Accepted: 23 May 2019
First Online: 8 June 2019
Ethics approval and consent to participate
: Research was performed in accordance with the Declaration of Helsinki and the study was approved by the Research and Ethical Committee of China Medical University. Informed consent was provided by the parents of the children who participated in the study.
: Not applicable
: The authors declare that they have no competing interests.