Hackney, J D Exposures of older adults with chronic respiratory illness to nitrogen dioxide. A combined laboratory and field study. [electronic resource] - The American review of respiratory disease Dec 1992 - 1480-6 p. digital Publication Type: Clinical Trial; Controlled Clinical Trial; Journal Article; Research Support, Non-U.S. Gov't ISSN: 0003-0805 Standard No.: 10.1164/ajrccm/146.6.1480 doi Subjects--Topical Terms: AgedAir Pollutants--adverse effectsFemaleForced Expiratory VolumeHumansLung Diseases, Obstructive--physiopathologyMaleMaximal Midexpiratory Flow RateMiddle AgedNitrogen Dioxide--adverse effectsPeak Expiratory Flow RateRespiratory Mechanics--drug effectsSmokingVital Capacity