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Authors
Zhang, Qi-Feng http://orcid.org/0000-0001-6327-7259
Zhang, Yu-Ji
Wang, Sheng
Wei, Yu
Li, Feng
Feng, Ke-Jian
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Article History
Received: 28 July 2020
Accepted: 13 October 2020
First Online: 22 October 2020
Ethics approval and consent to participate
: This research is retrospective and involving the collection of existing data and records. The ethical committee of Guilin People's Hospital approved all procedures of the study and written informed consent was obtained from all cases.
: Not applicable.
: The authors declare that they have no competing interests.
