Respiratory symptoms and air pollution in an urban population of northeastern United States.
D000328:Adult; D000367:Age Factors; D000368:Aged; D000397:Air Pollution / Q000032:analysis; D001991:Bronchitis / Q000453:epidemiology*; D003371:Cough / Q000453:epidemiology; D004522:Educational Status; D004781:Environmental Exposure; D004782:Environmental Health; D005260:Female; D006801:Humans; D008875:Middle Aged; D009093:Mucus / Q000378:metabolism; D009518:New York; D012907:Smoking; D012923:Social Class; D013458:Sulfur Dioxide / Q000032:analysis; D014505:Urban Population
D013458:Sulfur Dioxide