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Authors
Wang, Le
Lu, Sukun
Guo, Yinghui
Liu, Jianhua
Wu, Peng
Yang, Shuo
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Article History
Received: 23 February 2023
Accepted: 8 August 2023
First Online: 29 August 2023
Declarations
:
: The authors declare no competing interests.
: This study is approved by the Health Research Ethics Committee of Hebei Children’s Hospital affiliated with Hebei Medical University (Approval #2017016), in compliance with the principles of the Declaration of Helsinki, the Code of Ethics of the World Medical Association. All methods were carried out in accordance with relevant guidelines and regulations. The requirement for informed consent were waived by Health Research Ethics Committee of Hebei Children’s Hospital affiliated with Hebei Medical University as the study is retrospective and presents no risk of harm to subjects, and no privacy of individuals is exposed.
: Not applicable as all data presented in the article are de-identified.
: None to declare.
