Funding for this research was provided by:
National Natural Science Foundation of China (81630061, 81601768)
CAMS Innovation Fund for Medical Sciences (2017-I2M-1-014)
National Basic Research Funds for the Central institutes of China (2016ZX310048)
Received: 2 May 2019
Accepted: 26 July 2020
First Online: 4 August 2020
Ethics approval and consent to participate
: Ethics approval was deemed unnecessary according to national regulations. No Human sample was used in the study and the consent to participate is not applicable.
: Not applicable.
: The authors declare that they have no competing interests.