Exposure to airborne polycyclic aromatic hydrocarbons during pregnancy and risk of preterm birth.

Environ Res. 2014 Nov;135:221-6. doi: 10.1016/j.envres.2014.09.014. Epub 2014 Oct 2.
Padula AM, Noth EM, Hammond SK, Lurmann FW, Yang W, Tager IB,Shaw GM.

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