title: Barcelona's asthma epidemics.
authors: J G
authors: JG
authors: Ayres
mesh_terms: D000393:Air Pollutants / Q000009:adverse effects*; D001249:Asthma / Q000453:epidemiology* / Q000209:etiology; D006801:Humans; D013030:Spain / Q000453:epidemiology
chemical_list: D000393:Air Pollutants