Funding for this research was provided by:
National Institutes of Health (5U19AI100627-07)
Received: 16 January 2020
Accepted: 12 March 2020
First Online: 30 March 2020
Ethics approval and consent to participate
: Blood samples were obtained from healthy adult volunteers who provided written informed consent in accordance to Stanford University Administrative Panel on Human Subject Research’s Institutional Review Board (IRB) protocols. Samples were de-identified from donors following the guidelines of Stanford University’s Environmental Health and Safety Biosafety program.
: Not applicable.
: The authors declare that they have no competing interests.