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. 2018 Mar 20;28(9):797–818. doi: 10.1089/ars.2017.7394

FIG. 1.

FIG. 1.

Particulate matter sizes and air pollution thresholds and guidelines. Air pollution standards were obtained from WHO 2005 air quality guidelines. IT, interim targets; PM2.5, particulate matter <2.5 μM; PM10, particulate matter <10 μM.

HHS Vulnerability Disclosure