Funding for this research was provided by:
Natural Science Foundation of Shenzhen City (JCYJ20190806112201646)
Shenzhen Key Medical Discipline Construction Fund (SZXK070)
Received: 12 September 2020
Accepted: 27 December 2020
First Online: 19 January 2021
Ethics approval and consent to participate
: The study was approved by the Ethics Committee in Shenzhen blood center. The methods in the study were in accordance with the guidelines of the Declaration of Helsinki. Written informed consent was obtained from all subjects participating in this research.
: Not applicable.
: The authors declare that they have no conflicts of interest.