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. Author manuscript; available in PMC: 2010 Mar 1.
Published in final edited form as: J Pediatr. 2008 Oct 31;154(3):401–408.e1. doi: 10.1016/j.jpeds.2008.08.040

Figure 1.

Figure 1

Geographical location of CCAAPS infant’s homes. Infants lived within a seven county area of Cincinnati, Ohio. Families were recruited based on the proximity of their home residence to truck and bus traffic by geocoding residential addresses located on infant birth records.