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. 2020 Dec 10;128(12):127007. doi: 10.1289/EHP6340

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EHP is an open-access journal published with support from the National Institute of Environmental Health Sciences, National Institutes of Health. All content is public domain unless otherwise noted.

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Figure 1 is a map of Harris County and City of Houston, Texas, depicting highways, including interstates, state highways, and U.S. highways. The highlighted part of the map depicts the City of Houston and the part of the map which is not highlighted represents Harris County. — Overall map of our study area. Analyses were performed separately for all of Harris County and for City of Houston residents.