title: Nitrogen dioxide and asthma outbreaks.
mesh_terms: D000393:Air Pollutants / Q000009:adverse effects / Q000032:analysis*; D001249:Asthma / Q000453:epidemiology* / Q000209:etiology; D004196:Disease Outbreaks; D006801:Humans; D009585:Nitrogen Dioxide / Q000009:adverse effects / Q000032:analysis*; D013030:Spain
chemical_list: D000393:Air Pollutants; D009585:Nitrogen Dioxide