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. Author manuscript; available in PMC: 2020 Apr 16.
Published in final edited form as: Curr Environ Health Rep. 2019 Sep;6(3):105–115. doi: 10.1007/s40572-019-00235-7

Fig. 2.

Fig. 2

List of the studies that restrict analyses at low levels. The results are presented as percent increase in the outcome for 1 μg/m3 increase in PM2.5 for the full population (Full) and when restricting to levels below NAAQS (Restricted)