Article History
Received: 22 June 2020
Accepted: 11 January 2021
First Online: 10 March 2021
Ethics approval and consent to participate
: All the patients have signed the informed consent for the procedures. Due to the retrospective nature of the study, the ethics committee of Peking University First Hospital approved the access to the data in this research without informed consent. (No. 2020(134)).
: Not applicable.
: The authors declare that they have no competing interests.