Study on the association between ambient air pollution and daily cardiovascular and respiratory mortality in an urban district of Beijing.

Int J Environ Res Public Health · 2011 · PMC3138014 · PMID 21776219

Europe PMC DOI

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a decreasing trendno p-value reported

an increasing trendno p-value reported

Overall, the concentration of air pollutants in Beijing showed an increasing trend from 2003 to 2006, and a decreasing trend in 2007 and 2008 (cf.

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