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Erratum: Exposure to Air Pollution from Traffic and Childhood Asthma Until 12 Years of Age

doi: 10.1097/EDE.0b013e318283528e
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In the legends for Figures 2 and 3, the symbols are specified incorrectly. Empty (white) circles indicate wheeze ≥ 1 episode; gray circles indicate wheeze ≥ 3 episodes; and filled (black) circles indicate asthma.

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Reference

Gruzieva O, Bergström A, Hulchiy O, et al. Exposure to air pollution from traffic and childhood asthma until 12 years of age. Epidemiology. 2013;24:54–61
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