Funding for this research was provided by:
National Institutes of Health (P30ES007048, P01ES009581, P01ES011627, P01ES022845, U24EB021996, U54EB022002, UG3OD023287, R01ES016535, R03ES014046, P50CA180905, R01HL061768, R01HL076647, R01HL087680, RC2HL101651)
U.S. Environmental Protection Agency (RD83544101, R826708, RD831861, R831845)
South Coast Air Quality Management District (RFP #PBOC-9)
Received: 12 May 2018
Accepted: 11 March 2019
First Online: 29 March 2019
Ethics approval and consent to participate
: Informed consent was obtained from a parent or guardian, who completed baseline and annual follow-up written questionnaires on behalf of themselves and their children, and written informed assent was obtained from each child. The research protocol was reviewed and approved by the University of Southern California Health Campus Institutional Review Board with the approval number HS-13-00150.
: Not applicable.
: The authors declare that they have no competing interests.
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