Article History
Received: 9 July 2020
Accepted: 9 February 2021
First Online: 1 March 2021
Ethics approval and consent to participate
: The Ethics Committee of Peking University First Hospital approved this study and oral informed consent (2020209). Oral informed consent was obtained from all patients. Access to the patients’ data was permitted by the Committee of Peking University First Hospital.
: Not applicable.
: The authors declare that they have no competing interests.