Funding for this research was provided by:
West China Hospital, Sichuan University (ZYJC21014)
Beijing iGandan Foundation (RGGJJ-2021-037)
National Major Science and Technology Projects of China (2018ZX10715-003)
Article History
Received: 28 October 2021
Accepted: 8 November 2021
First Online: 11 November 2021
Declarations
:
: Approval for this study was obtained from the Biomedical Research Ethics Committee of West China Hospital of Sichuan University (No. 2020-650). All study components were performed according to the ethical standards laid down in the 1964 Declaration of Helsinki and its later amendments. Informed consent was not obtained because of retrospective design.
: Not applicable.
: The authors declare to have no competing interests.