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. 2023 Jul 22;14:4432. doi: 10.1038/s41467-023-39797-4

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Fig. 2 — a Percentage of the population exposed to PM2.5 over 5 μg/m. b Percentage of population exposed to PM2.5 over 15 μg/m³. c Percentage of population exposed to PM2.5 over 35 μg/m³.