Effect of maternal ozone exposure before and during pregnancy on wheezing risk in offspring: A birth cohort study in Guangzhou, China

Sui Zhu, Guimin Chen, Yufeng Ye, He Zhou, Guanhao He, Hanwei Chen, Jianpeng Xiao, Jianxiong Hu, Fangfang Zeng, Pan Yang, Chaoqun Liu, Zhongrong He, Jiong Wang, Ganxiang Cao, Yumeng Chen, Hao Feng, Wenjun Ma, Tao Liu