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Worldwide time trends in the prevalence of symptoms of asthma, allergic rhinoconjunctivitis, and eczema in childhood: ISAAC Phases One and Three repeat multicountry cross-sectional surveys

AsthmaAllergyPediatric EpidemiologyAllergy MedicineGlobal HealthPediatricsPublic HealthAllergic RhinitisMedicineAllergic RhinoconjunctivitisWorldwide Time Trends