A life course approach to asthma and wheezing among young children caused by ozone: A prospective birth cohort in northern China.

High-level of O exposure after birth could lead to AW among young children. Importantly, the AW onset model may include the risk factors accumulation and the sensitive period model. Specifically, there are two sensitive windows in early life, and the correlated insults between the high level of O and other pollutants as well as open windows in the asthma-inducing effect.