Funding for this research was provided by:
U.S. Environmental Protection Agency (RD-83543301)
National Institute of Environmental Health Sciences (P01ES022841, R00ES023846)
National Institute of Allergy and Infectious Diseases (K08AI141728)
Received: 10 December 2019
Accepted: 21 May 2020
First Online: 3 June 2020
Ethics approval and consent to participate
: This study was approved by the University of California, San Francisco Institutional Review Board (UCSF IRB). Written and verbal consent were obtained from study participants prior to sample collection in accordance with the Declaration of Helsinki.
: Not applicable.
: The authors declare they have no actual or potential competing financial interests.