Percentage of reported asthma and breathlessness, register based asthma diagnosis and medication by level of reported maternal anxiety in a cross-sectional twin study.
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1Maternal anxiety assessed with BAI was only available for study 2. 2Breathlessness reported by child was only available for study 2. 3At least two purchases of asthma medication, except oral beta-2-agonists, on different days July 2005– December 2009.
创建时间：
2015-12-02
