Funding for this research was provided by:
CAMS Innovation Fund for Medical Sciences (2021-I2M-C&T-B-020)
Received: 9 June 2021
Accepted: 22 May 2022
First Online: 17 August 2022
: This study was approved by the institutional review board (No. S-K948) of Peking Union Medical College Hospital. No informed consent was required, because the data were anonymized.
: Not applicable.
: The authors declare that they have no competing interests.