Respiratory damage in children exposed to urban pollution (Presented in part at the American Thoracic Society Meeting, San Francisco, May 18, 2001.Though the research decribed here was funded wholly or in part by the United States EPA through cooperative agreement CR829522 with the Center for Environmental Medicine, Asthma, and Lung Biology (University of North Carolina at Chapel Hill), it was not subjected to the EPA's required peer and policy review, and so does not necessarily reflect the views of the EPA. No official endorsement should be inferred. Mention of trade names or commercial products does not constitute endorsement or recommendation of their use.)