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Authors
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Funding
Funding for this research was provided by:
Science & Technology department of Sichuan Province (2020YFS0105)
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Article History
Received: 20 January 2021
Revised: 21 May 2021
Accepted: 24 May 2021
First Online: 4 June 2021
Declarations
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: The authors declare no competing interests.
: The study protocol was approved by the Institutional Review Board/Ethics Committee affiliated with West China Second University Hospital, Sichuan University.
: This was a retrospective study and the data were collected by searching electronic medical records. Therefore, informed consent was not available. However, this study was approved by the Institute Review Board/Ethic Committee affiliated with West China Second University Hospital, Sichuan University and was performed in accordance with ethical standards of the Declaration of Helsinki.
: All the authors approved the final manuscript as submitted and reach an agreement on the publication of this study.
