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Authors
Liu, Zhai
Li, Yongjun
Zhang, Chenguang
Xu, Hui
Zhao, Junlu
Huang, Chencui
Chen, Xingzhi
Ren, Qingyun
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Article History
Received: 19 January 2025
Accepted: 20 May 2025
First Online: 1 July 2025
Declarations
:
: The study was conducted in accordance with the 1964 Declaration of Helsinki and later amendments. This study was approved by the Ethics Committee of the First Hospital of Hebei Medical University (approval no. 20220104). The requirement for individual informed consent was waived because of the retrospective nature of the study.
: The requirement for written informed consent was waived because of the retrospective nature of the study.
: The authors declare no competing interests.
