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. Author manuscript; available in PMC: 2015 May 1.
Published in final edited form as: Environ Res. 2014 Apr 5;131:95–103. doi: 10.1016/j.envres.2014.02.017

Fig. 1. Pollutant data available in various ages of subjects (prenatal through age 9/10) and various sampling matrices.

Fig. 1

At each age including prenatally, subjects were enrolled over 4–7 years for air pollution and 5–9 years for urinary PAH metabolites. a9 PAH (8 nonvolatile PAH and one semivolatile pyrene) were measured. b16 PAH (8 nonvolatile and 8 semivolatile) were measured.