From the Centers for Disease Control and Prevention. Children at risk from ozone air pollution--United States, 1991-1993.
D000393:Air Pollutants / Q000009:adverse effects*; D000397:Air Pollution / Q000009:adverse effects / Q000706:statistics & numerical data*; D002648:Child; D006801:Humans; D010126:Ozone / Q000009:adverse effects*; D012306:Risk; D012905:Smog / Q000009:adverse effects; D014481:United States
D000393:Air Pollutants; D012905:Smog; D010126:Ozone