Air pollution and health in Sri Lanka: a review of epidemiologic studies.

BMC Public Health · 2010 · PMC2893095 · PMID 20515506

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an increasing trendno p-value reported

The annual mean levels of SO 2 have not exceeded the USEPA limit of 80 μg/m 3 , but the levels have shown an increasing trend in the last few years (Figure 2 ).

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