Du, Zhe
Wang, Tianbing
Article History
Received: 9 December 2021
Accepted: 25 February 2022
First Online: 5 March 2022
Declarations
:
: As this was a retrospective review, the requirement to obtain individual written informed consent was waived by the Research Ethics Board of Peking University People’s Hospital. Ethical approval for this study was granted by the Ethic Committee of Peking University People’s Hospital. All methods were performed in accordance with the relevant guidelines and regulations (as guided by the Declaration of Helsinki). All data analyzed in this study were anonymized.
: Not applicable.
: The authors declare that they have no competing interests.