Funding for this research was provided by:
National Natural Science Foundation of China (81971475)
Received: 20 March 2020
Accepted: 10 November 2020
First Online: 18 November 2020
Ethics approval and consent to participate
: Written informed consent was obtained from each patient, and this study was approved by the Institutional Review Board of Peking Union Medical College Hospital.
: Not applicable.
: The authors declare that they have no competing interests.