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Authors
Qian, Fang
Gao, Guiju
Song, Yangzi
Xu, Yanli
Wang, Aibin
Wang, Sa
Hao, Yiwei
Chen, Meiling
Ma, Xiaoyang
Zhao, Tianwei
Guo, Xiaodi
Chen, Zhihai
Zhang, Fujie https://orcid.org/0000-0001-6386-9879
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Article History
Received: 24 July 2020
Accepted: 19 November 2020
First Online: 1 December 2020
Ethics approval and consent to participate
: This study was approved by the Ethics Committee of Beijing Ditan Hospital (No. 202000601). The need for individual consent was waived because of the retrospective nature of the study.
: Not applicable.
: The authors declare that they have no competing interests.
