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Authors
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Funding
Funding for this research was provided by:
natural science foundation of china (31700977, 31671151)
natural science foundation of beijing (5212004)
111 project (BP0719032)
advanced innovation center for future education (27900-110631111)
directional guidance fund for the capital institute of pediatrics (FX-2019-03)
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Article History
Accepted: 7 February 2022
First Online: 5 March 2022
Declarations
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: All procedures performed in studies involving human participants were in accordance with a local ethical standard at the Capital Institute of Pediatrics (approval no.: SHERLL 2019001) with the 1964 Helsinki declaration and its later amendments or comparable ethical standards.
: Informed consent was obtained from all individual participants included in the study.
: On behalf of all authors, the corresponding author states that there is no conflict of interest.
