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Authors
Fan, Ning
Hu, Yong
Shen, Hong
Liu, Shengjie
Zhao, Guang
Sun, Lanju
Li, Chunyan
Zhao, Xin
Li, Yanning
Wang, Jianhua
Cui, Yunfeng https://orcid.org/0000-0002-1071-3333
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Article History
Received: 17 July 2020
Accepted: 26 November 2020
First Online: 1 December 2020
Ethics approval and consent to participate
: This is a retrospective study and has been reviewed by the Medical Ethics Committee of Tianjin NanKai Hospital (NKYY_YX_IRB_2018_002_01). As the study was retrospective, no informed consent was required. All patients are anonymous and their information is not public.
: Not applicable.
: The authors declare that they have no competing interests.
