Funding for this research was provided by:
CAMS Innovation Fund for Medical Sciences (2017-I2M-1-009, 2016-I2M-3-024)
Tsinghua University Initiative Scientific Research Program, Beijing Science and Technology Project (Z201100005420025)
Tsinghua University Spring Breeze Fund (2020Z99CFG010)
Received: 17 October 2020
Accepted: 29 December 2020
First Online: 7 January 2021
Ethics approval and consent to participate
: The study was approved by the Ethics Committee of the Institute of Blood Transfusion, Chinese Academy of Medical Sciences & Peking Union Medical College. Written informed consent was obtained from each study participant.
: Not applicable.
: The authors declare that they have no competing interests.