Combined exposure to heavy metals in PM2. 5 and pediatric asthma
Background Asthma is the most common chronic allergic disease in children; it affects more
than 300 million people worldwide. Information on the association between exposure to
ambient heavy metals and incidence of pediatric asthma is limited. Objective We sought to
evaluate the effects of heavy metals during pregnancy and infancy periods with asthma and
identify a sensitive time window, clarifying the effect of ambient heavy metals on lung
development. Methods A total of 171,281 children, who were born from 2004 to 2011 in …
than 300 million people worldwide. Information on the association between exposure to
ambient heavy metals and incidence of pediatric asthma is limited. Objective We sought to
evaluate the effects of heavy metals during pregnancy and infancy periods with asthma and
identify a sensitive time window, clarifying the effect of ambient heavy metals on lung
development. Methods A total of 171,281 children, who were born from 2004 to 2011 in …