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Authors
Yang, Hai
Liu, Yi-jia
Ye, Jia-lu
Zhao, Li-hong
Li, Ling-li
Hou, Xiao-ling
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Funding
Funding for this research was provided by:
Sichuan Province Science and Technology Support Program (2020YFS0153)
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Article History
Received: 8 January 2021
Accepted: 13 May 2021
First Online: 29 May 2021
Declarations
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: Before the study began, we had carefully consulted the Ethics Committee and Institutional Review Board of West China Hospital. They suggested that this study did not involve special interventions for patients and we should conduct this study in compliance with the Helsinki Declaration and inform patients fully of the purpose of the study. So, all data was fully anonymized at-source with researchers. Given the anonymous nature of the data, the ethics committee waived any requirement for patient informed consent.
: Not applicable.
: The authors declare that they have no competing interests.
