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Authors
Duan, Ruonan
Chen, Yue
Qiao, Tian
Duan, Ruotong
Chen, Mengxue
Zhao, Li
Gong, Yunhui
Cheng, Guo
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Funding
Funding for this research was provided by:
National Natural Science Foundation of China (81673158)
International Cooperation Project of Science and Technology Department of Sichuan Province (19GJHZ0171)
International Cooperation Project of Chengdu Science and Technology Bureau (2019-GH02-00058-HZ)
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Article History
Received: 24 April 2020
Accepted: 2 September 2020
First Online: 9 September 2020
Ethics approval and consent to participate
: The CHNS study was approved by the Institutional Review Board at the University of North Carolina and the National Institute of Nutrition and Health, Chinese Center for Disease Control and Prevention. All parents provided written informed consent for their children’s participation in the survey.
: Not applicable.
: The authors declare that they have no competing interests.
