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Authors
Tian, Tian
Bai, Jiming
Li, Qian
Li, Qing
Kang, Shumin
Wu, Qiong
Cui, Penghua
Lan, Suwei
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Article History
Received: 6 February 2026
Accepted: 21 July 2026
First Online: 3 August 2026
Declarations
Ethics approval: This study was performed in line with the principles of the Declaration of Helsinki. Approval was granted by the Ethics Committee of Affiliated Hospital of Chengde Medical University (No. CYFYLL2024357; CYFYLL2024643).
Consent to participate: Informed consent was obtained from all individual participants included in the study. Written informed consent was obtained from the parents.
Consent to publish: The authors affirm that human research participants provided informed consent for publication of the images in Figures.
Competing interests: The authors declare that they have no competing interests.
