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Authors
Yan, Qinghu
Wang, Wuzhang
Zhao, Wenlong
Zuo, Liping
Wang, Dongdong
Chai, Xiangfei
Cui, Jia
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Funding
Funding for this research was provided by:
Shandong medical and health science and technology development plan project (2019WS535)
Shandong medical and health science and technology development plan project (2019WS535)
Shandong medical and health science and technology development plan project (2019WS535)
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Article History
Received: 27 April 2021
Accepted: 24 November 2021
First Online: 7 January 2022
Declarations
:
: All authors attest that they meet the Helsinki declaration. The authors declare that they consent to participate.
: Not applicable.
: This retrospective studies included all subjects are under 18 and informed consent obtained from a parent and/or legal guardian.
: The authors declare that they have no competing interests.
