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Authors
Liu, Zhi-ming
Liao, Chih-yi
Zhang, Heng
Han, Zhe
Wang, Jun-mei
Ma, Zhen-yu
Li, Chun-de
Gong, Jian
Liu, Wei
Sun, Tao
Tian, Yong-ji http://orcid.org/0000-0001-9915-8630
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Article History
Received: 7 July 2021
Accepted: 18 April 2022
First Online: 12 May 2022
Declarations
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: All procedures performed in studies involving human participants with the ethical standards of the institutional and/or national research committee by the 1964 Helsinki Declaration and its later amendments or comparable ethical standards. This study was approved by Institutional Review Board of Beijing Tiantan Hospital, Capital Medical University. The approval reference number is “KY 2020-090-02.” All experiments were performed in accordance with relevant named guidelines and regulations, and we did not take any interventions in this retrospective study. The subjects in the study are under 18 and informed consent was obtained from legal guardians of all subjects.
: All patients or legal guardians provided written informed consent to participate in this study.
: The authors declare that they have no competing interests.
