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Authors
Gong, Hai-bo
Gao, Shu-tao
Pu, Xiong-ming https://orcid.org/0000-0003-2837-3223
Kang, Xiao-jing
Wu, Xiu-juan
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Article History
Received: 10 October 2019
Accepted: 30 April 2020
First Online: 12 May 2020
Ethics approval and consent to participate
: All original data used in this study were based on previously published literature and online public databases, and no human participants were included. Therefore, ethical approval and patient consent were unnecessary in this work.
: Not applicable.
: The authors declare that there was no conflict of interests.
