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Subjects
- Air Pollution -- adverse effects[remove]5
- Air Pollution -- prevention & control1
- England1
- Environmental Health1
- Esophageal Diseases1
- Fossil Fuels1
- Lung Diseases -- etiology1
- Odorants1
- Pennsylvania -- epidemiology1
- Respiratory Tract Diseases -- chemically induced1
- Respiratory Tract Diseases -- epidemiology1
- Respiratory Tract Infections1
- Rhode Island1
- Smog -- adverse effects1
- United States1