Acute air pollution exposure and gastrointestinal cancer mortality: a case-crossover study in coastal China.

Front Public Health · 2025 · PMC12507895 · PMID 41080867

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a decreasing trendno p-value reported

Despite a decreasing trend over the past decade, PM 2.5 levels in Yancheng persistently exceed the World Health Organization (WHO) air quality guideline (annual mean of 5 μg/m 3 ) by a substantial margin. 2.2.

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