Article History
Received: 1 December 2021
Accepted: 23 March 2022
First Online: 7 April 2022
Declarations
:
: This retrospective study was approved by the institutional Ethics Review Board of West China Hospital and West China Second University Hospital. We confirm that all methods were performed in accordance with the relevant guidelines and regulations by including a statement in the Declarations section to this effect. Additionally, the Informed consent was waived by the IRB of West China Hospital and West China Second University Hospital due to retrospective nature of the study.
: Not applicable.
: The authors declare that they have no competing interests.