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. 2022 Sep 24;19(19):12095. doi: 10.3390/ijerph191912095

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© 2022 by the authors.

Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).

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Geographic distribution of sidewalks across census tracts in three metropolitan areas. (A) Washington DC, (B) San Diego, California, (C) Jacksonville, Florida. Darker colors signal higher prevalence of a neighborhood characteristic.