Shi, Haonan
Wan, Guangsheng
Wang, Tingting
Zhu, Jia
Jiang, Lan
Ma, Shaowei
Yao, Jian
Yin, Zhe
Maimaiti, Murizhati
Dong, Huijuan
Funding for this research was provided by:
National Natural Science Foundation of China (81861138005, 81860179)
Article History
Received: 3 December 2020
Accepted: 22 July 2021
First Online: 16 August 2021
Declarations
:
: The study was approved by the research ethics committee of Fudan University (protocol no. IRB00002408 & FWA00002399), and all parents and class teachers of the children under investigation have signed written informed consent.
: Not applicable.
: The authors declare that they have no competing interests.