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. 2020 Aug 28;17(17):6274. doi: 10.3390/ijerph17176274

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© 2020 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 (http://creativecommons.org/licenses/by/4.0/).

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Spatial clusters of drPM_2.5 and drPM₁₀. (a,b) The results of drPM_2.5 in 2018–2019 and 2019–2020, respectively; (c,d) The results of drPM₁₀ in 2018–2019 and 2019–2020, respectively.