<style face="normal" font="default" size="100%">Siblings, multiple births, and the incidence of allergic disease: a birth cohort study using the West Midlands general practice research database</style>

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31<style face="normal" font="default" size="100%">Siblings, multiple births, and the incidence of allergic disease: a birth cohort study using the West Midlands general practice research database</style><style face="normal" font="default" size="100%">Siblings, multiple births, and the incidence of allergic disease: a birth cohort study using the West Midlands general practice research database</style>