Hazards for skaters and swimmers.
D000391:Air Microbiology; D000393:Air Pollutants / Q000009:adverse effects*; D006099:Granuloma / Q000209:etiology; D006801:Humans; D008171:Lung Diseases / Q000209:etiology*; D009585:Nitrogen Dioxide / Q000009:adverse effects*; D012861:Skating; D013550:Swimming
D000393:Air Pollutants; D009585:Nitrogen Dioxide