About 4 million children worldwide develop asthma each year because of inhaling nitrogen dioxide air pollution, according to a new study. The study, based on data from 2010 to 2015, estimates that 64 percent of these new cases of asthma occur in urban areas.
from
https://healthnews010.wordpress.com/2019/04/12/millions-of-children-worldwide-develop-asthma-annually-due-to-traffic-related-pollution/
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