Research Papers: Roger Chang

Association of Improved Air Quality with Lung Development in Children

By W. James Gauderman, Robert Urman, Edward Avol, Kiros Berhane, Rob McConnell, Edward Rappaport, Roger Chang, Fred Lurmann, Frank Gilliland

The New England Journal of Medicine


Air-pollution levels have been trending downward progressively over the past several decades in southern California, as a result of the implementation of air quality–control policies. We assessed whether long-term reductions in pollution were associated with improvements in respiratory health among children.

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