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. 2011 Mar 23;119(9):1333–1338. doi: 10.1289/ehp.1002918

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(A) Relationship between NO₂ exposure (micrograms per cubic meter) by trimester of pregnancy and birth outcomes for the entire sample: single-pollutant models. (B) Relationship between NO₂ exposure (micrograms per cubic meter) by trimester of pregnancy and birth outcomes in women who spent ≥ 15 hr/day at home: single-pollutant models.