title: Unhealthy air quality - United States, 2006-2009.
authors: National Center for Environmental Health, CDC, USA. fay1@cdc.gov
authors: Fuyuen Y
authors: FY
authors: Yip
authors: Jeffrey N
authors: JN
authors: Pearcy
authors: Paul L
authors: PL
authors: Garbe
authors: Benedict I
authors: BI
authors: Truman
mesh_terms: D000393:Air Pollutants / Q000032:analysis*; D004522:Educational Status; D004781:Environmental Exposure; D054624:Health Status Disparities; D006801:Humans; D007182:Income; D010126:Ozone / Q000032:analysis*; D010316:Particle Size; D011203:Poverty; D044469:Racial Groups; D012111:Residence Characteristics; D014481:United States / Q000453:epidemiology
chemical_list: D000393:Air Pollutants; D010126:Ozone