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Norway
Asthma
Respiratory Sounds
Respiratory Tract Infections
Environmental Exposure
Hypersensitivity
Body Mass Index
Questionnaires
Exercise
Infants
Newborn Infant
Mothers
Pregnancy
Cross-Sectional Studies
Cohort Studies
Prevalence
Risk Factors
Odds Ratio
Logistic Models
Forced Expiratory Volume
Co-Publications
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