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Authors
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Funding
Funding for this research was provided by:
natural science foundation of guangdong province (No. 2020A1515110193)
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Article History
Received: 13 April 2021
Accepted: 25 August 2021
First Online: 15 November 2021
Declarations
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: This study was approved by the Ethical Committees of the Guangzhou Women and Children’s Medical Center, Guangzhou, China. Written informed consent for participation in this study was obtained from the parents of the patients.
: Written informed consent was obtained from the parents of all participants.
: The authors declare that they have no competing interests.
