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Authors
Chen, Yu-ling
Li, Hao
Li, Shu
Xu, Zhou
Tian, Shen
Wu, Juan
Liang, Xin-yu
Li, Xin
Liu, Zi-li
Xiao, Jun
Wei, Jia-ying
Ma, Chen-yu
Wu, Kai-nan
Ran, Liang
Kong, Ling-quan http://orcid.org/0000-0001-5705-9001
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Article History
Received: 17 January 2021
Accepted: 20 April 2021
First Online: 10 May 2021
Declarations
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: All procedures in studies involving human participants were performed in accordance with the ethical standards of the institutional research committee (The Ethics Committee of the First Affiliated Hospital of Chongqing Medical University, approval number: 2019-141) and with the 1964 Helsinki Declaration and its later amendments or comparable ethical standards. The informed consent was waived because the information of all the participants was anonymous and retrospective.
: Not applicable.
: The authors declare that they have no competing interests.
