Funding for this research was provided by:
National Public Welfare Basic Scientific Research Program of Chinese Academy of Medical Sciences (2018PT32003 and 2017PT32004)
Peking Union Medical College Hospital Youth Fund (pumch201911061)
Received: 20 September 2020
Accepted: 13 December 2020
First Online: 6 January 2021
Ethics approval and consent to participate
: This study was approved by the Institutional Review Board at Peking Union Medical College Hospital (HS-934). Written informed consent was obtained from all participants.
: Not applicable.
: The authors declare that they have no competing interests.