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The objective of this study was to estimate the relationship between the prevalence of asthma in schoolchildren aged 6-7 years and 13-14 years and the mean annual sunny hours (MASH) in Spain, and to(More)
OBJECTIVE To analyze geographic variations in the prevalence of symptoms related to asthma in Spanish children and adolescents. POPULATION AND METHODS In 2001 and 2002, the Spanish arm of the(More)
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