Funding for this research was provided by:
National Institute of Allergy and Infectious Diseases (5T32AI007062-39)
National Institute of Child Health and Human Development (5T32GM086330)
National Heart, Lung, and Blood Institute (R01 HL135235-01)
National Institute of Environmental Health Sciences (R01ES023349, K23-ES021745, R01ES025124, P30ES010126, R01ES021900)
U.S. Environmental Protection Agency (CR 83578501)
Received: 16 July 2019
Accepted: 31 October 2019
First Online: 12 November 2019
Ethics approval and consent to participate
: Approval for all studies was obtained from the University of North Carolina Institutional Review Board. Informed consent was obtained from all study participants prior to enrollment.
: Not applicable.
: The authors declare that they have no competing interests.