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Authors
Han, Yu
Jin, Shihao
Liu, Liyuan
Qu, Zhiyi
Gao, Lei
Li, Peiying
Xiong, Wenjuan
Zhang, Xin
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Article History
Received: 14 January 2022
Accepted: 13 June 2022
First Online: 21 June 2022
Declarations
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: The study protocol was approved by the Institutional Review Board of Tianjin Medical University and adhered to the tenets of the Declaration of Helsinki. Written informed consent to collect data was obtained from the parents or caregivers of all children.
: I am free to contact any of the people involved in the research to seek further clarification and information.
: This manuscript has not been published or presented elsewhere in part or in entirety and is not under consideration by another journal.
: The authors declare no competing interests.
