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Germany
Europe
Occupational Exposure
Environmental Exposure
Asthma
Occupational Diseases
Respiratory Tract Diseases
Hypersensitivity
Agricultural Workers' Diseases
Questionnaires
Cross-Sectional Studies
Risk Factors
Prevalence
Logistic Models
Odds Ratio
Allergens
Animal Husbandry
Cellular Phone
Domestic Animals
Case Control Studies
Co-Publications
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