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Title
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.
Authors
Asher MI; Montefort S; Björkstén B; Lai CKW; Strachan DP; Weiland SK; Williams H; ISAAC (International Study of Asthma and Allergies in Childhood) Phase Three Study Group