Funding for this research was provided by:
U.S. Department of Health & Human Services | National Institutes of Health (R01 AI109317-01A1)
Foundation for the National Institutes of Health (R01 AI138203)
National Natural Science Foundation of China (81530063, 32000033, 82020108021)
Article History
Received: 26 September 2020
Revised: 27 October 2020
Accepted: 3 November 2020
First Online: 27 November 2020
Competing interests
: The authors declare no competing interests.