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Occupational Exposure
Occupational Diseases
Urinary Bladder Neoplasms
Neoplasms
Agricultural Workers' Diseases
Case Control Studies
Risk Factors
Incidence
Cohort Studies
Odds Ratio
Risk Assessment
Confidence Intervals
Iowa
North Carolina
Spain
Pesticides
Benzene
Occupations
Questionnaires
Smoking
Co-Publications
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