Fig. 1From: The role of lifestyle in the association between long-term ambient air pollution exposure and cardiovascular disease: a national cohort study in ChinaMaps of the distribution of studied ambient air pollutants and enrolled participant locations across China. NO2, nitrogen dioxide; O3, ozone; PM1, particulate matter with an aerodynamic diameter less than 1 μm; PM2.5, particulate matter with an aerodynamic diameter less than 2.5 μm; PM10, particulate matter with an aerodynamic diameter < 10 μmBack to article page