Figure 2

fig 2

Figure 2 – Frequency of cough and wheeze is highest in Swiss adults living close to the highway. The spatial distribution of symptoms follows the spatial distribution of near-road traffic-related pollutants such as ultrafine particles, diesel soot, carbon monoxide and other primary pollutants. Associations are adjusted for other risk factors. Adapted from Hazenkamp-von Arx et al., 2011.

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