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With airway hyperresponsiveness, wheeze in the last 12 months, and 3-in-5 sample of children with no airway hyperresponsiveness or wheeze in the last 12 months
Seafood
In the past year
Ellwood et al., 2001
Ecological
Children
Aged 6-7 and 13-14 years
53 countries
The International Study of Asthma and Allergies in Childhood (ISAAC)
