Associations of Compound Exposure to Heat Waves and Ozone During Pregnancy with Preterm Birth: A Birth Cohort Study
Background: Previous studies have associated heat waves and ozone (O3) with preterm birth (PTB), a leading factor of neonatal morbidity and mortality. However, the impact of compound exposure to the two factors has rarely been examined. Methods: We included 77,529 mother–infant pairs from a birth cohort in Foshan, Chin...