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Figure S3: Prevalence of symptoms of severe asthma amongst wheezers in the past 12 months in 6-7 year age group. The symbols indicate prevalence values of <30% (blue square), 30 to <40% (green circle), 40 to <50% (yellow diamond) and >50% (red star).
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Figure S3: Prevalence of symptoms of severe asthma amongst wheezers in the past 12 months in 6-7 year age group. The symbols indicate prevalence values of <30% (blue square), 30 to <40% (green circle), 40 to <50% (yellow diamond) and >50% (red star).