Conclusions: Respiratory symptoms occurred in the majority of ironworkers at the WTC disaster site and were not attributable to smoking. Exposure on September 11 was associated with a greater prevalence of cough. Objective evidence of lung disease was less common. Spirometry underestimated the prevalence of lung function abnormalities in comparison to FO. Continuing evaluation of symptoms, chest radiographs, and airway dysfunction should determine whether long-term clinical sequelae will exist. (CHEST 2004; 125:1248–1255)
The online version of this article, along with updated information and services can be found online on the World Wide Web at: http://www.chestjournal.org/content/125/4/1248.full.html
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