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Air pollutants Black smoke (BS) Sulphur dioxide (SO 2 ) Nitrogen dioxide (NO 2 ). Birth outcomes Low birth weight (<2500g) Prematurity (<37 weeks) Intrauterine growth retardation Birth weight.
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Air pollutants Black smoke (BS) Sulphur dioxide (SO2) Nitrogen dioxide (NO2) Birth outcomes Low birth weight (<2500g) Prematurity (<37 weeks) Intrauterine growth retardation Birth weight The purpose of the study was to examine if exposure to outdoor air pollution during pregnancy is associated with increased risk of adverse birth outcomes in Polish urban population