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Authors
Zhou, Shuang
Cheng, Yu
Cheng, Lan
Wang, Di
Li, Qin
Liu, Zheng
Wang, Hai-Jun http://orcid.org/0000-0003-0849-2903
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Funding
Funding for this research was provided by:
National Key R&D Program of China (2016YFC1300204)
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Article History
Received: 4 September 2019
Accepted: 21 January 2020
First Online: 31 January 2020
Ethics approval and consent to participate
: The study was approved by the Ethic Committee of Peking University Health Science Centre. The primary caregivers of eligible children provided the written consent to participate in the study.
: Not applicable.
: The authors declare that they have no competing interests.
