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Authors
Sun, Lin
Qi, Xue
Guo, Yajie
Qi, Hui
Li, Jieqiong
Wu, Xirong
Yin, Qingqin
Guo, Yan
Xu, Baoping
Wang, Yacui
Jin, Qi
Gao, Lei
Shen, Adong
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Article History
Received: 2 April 2021
Accepted: 21 July 2021
First Online: 13 August 2021
Declarations
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: Ethics approval has been granted by the Research Ethics Committee of Beijing Children’s Hospital (2018-96). All the data were collected retrospectively and anonymized in a standardized case report form in the hospital database. All participants were provided with written information about the study. Written informed consent of all study participants from their parents/guardians were obtained and documented in accordance with the Institutional policy.
: Not applicable.
: The authors declare no competing interests.
