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Authors
Zhu, Rui-xia
Nie, Xiu-hong
Liu, Xiao-fang
Zhang, Yong-xiang
Chen, Jin
Liu, Xue-jiao
Hui, Xin-jie
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Article History
Received: 3 January 2023
Accepted: 13 July 2023
First Online: 24 July 2023
Declarations
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: The Ethics Committee of Xuanwu Hospital, Capital Medical University, Beijing, China approved the research protocol (No. KS2022170). Written informed consent was waived by the Xuanwu Hospital ethics committee because this was a retrospective multi-center study and it was difficultly to obtain consent. All experiments were performed in accordance with the Declaration of Helsinki. All authors have participated in the manuscript, and we thank most of the patients who kindly participated in this study.
: Not applicable.
: No part of the research was funded by tobacco industry sources.The authors declare no financial or other potential conflict of interest.
