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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/).
Schools in the city of Barcelona (2019) by neighborhood socioeconomic status (SES): (a) shows the availability of retail outlets around schools (within a 400-m radius); (b) shows the proximity of unhealthy retail outlets around schools (within a 400-m radius).