title: [Atmospheric pollution and bronchial asthma].
mesh_terms: D000397:Air Pollution / Q000009:adverse effects*; D001249:Asthma / Q000453:epidemiology / Q000209:etiology*; D004196:Disease Outbreaks; D006801:Humans; D009589:Nitrogen Oxides / Q000009:adverse effects
chemical_list: D009589:Nitrogen Oxides
vernacular_title: Contaminación atmosférica y asma bronquial.