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Authors
Niu, Xueyang
Sun, Yan
Yang, Ying
Cheng, Miaomiao
Tan, Quanzhen
Zhang, Jie
Zhang, Yuehua http://orcid.org/0000-0002-8859-2535
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Article History
Received: 19 February 2021
Accepted: 6 August 2021
First Online: 9 September 2021
Declarations
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: This study was approved by the Ethics Committee of Peking University First Hospital(approval number is 2012 [453]). Parental written informed consent was obtained from patients of all study participants.
: Parental written informed consent was obtained from patients of all study participants.
: The authors declare that they have no competing interests.
