Funding for this research was provided by:
National Natural Science Foundation of China (81772639, 81802475)
Natural Science Foundation of Beijing Municipality (7192157)
China Postdoctoral Science Foundation (198831)
Fundamental Research Funds for the Central Universities (2017320027)
National Natural Science Foundation of China (81772639, 81802475)
Chinese Academy of Medical Sciences (2016-I2M-1-001, 2017-1002-1-16, 2018PT32014, 2018PT32002)
China Postdoctoral Science Foundation (198831)
Fundamental Research Funds for the Central Universities (2017320027)
Article History
Received: 5 October 2019
Accepted: 17 December 2019
First Online: 23 December 2019
Ethics approval and consent to participate
: Not applicable.
: Not applicable.
: The authors declare that they have no competing interests.