Prenatal exposure to ambient PM2.5, roadway proximity, pre-term birth, and effect modification by socioeconomic indicators and infant sex. (October 2019) - S, Quraishi; M, Hazlehurst; C, Loftus; C, Karr; F, Tylavsky; K, LeWinn; N, Bush; S, Sathyanarayana; A, Szpiro; D, Enquobahrie