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The aim of our study was to assess the impact of short-term ultrafine particle concentration changes in ambient air to daily total and cardiovascular mortality in the older population (65 years and above) living in Zabrze, a city located in the Silesia Region of Poland. The measure of this relationship was the relative risk (RR) of daily mortality related to a 10 ng/mJ increase in PM2.5 concentrations...
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