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Authors
Zhang, Zhijie
Cao, Yu
Li, Yanjian
Chen, Xufang
Ding, Chen
Liu, Yong
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Article History
Received: 17 November 2020
Accepted: 1 June 2021
First Online: 29 June 2021
Declarations
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: All information was anonymized before being made available for research. This study was approved by the Shengjing Hospital of China Medical University Ethics Committee. All methods were carried out in accordance with relevant guidelines and regulations. Informed consent was documented from parent and/or legal guardian.
: Not applicable.
: The authors declare that they have no competing interests.
