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Is the increasing prevalence and severity of coal workers' pneumoconiosis in the United States due to increasing silica exposure?
- Correspondence to Robert A C Cohen, Division of Pulmonary and Critical Care Medicine, Stroger Hospital of Cook County, 1900 West Polk Street, Suite #1402 Chicago, IL 60612, USA; bobcohen{at}uic.edu
Citation
Is the increasing prevalence and severity of coal workers' pneumoconiosis in the United States due to increasing silica exposure?
Publication history
- Accepted October 11, 2009
- First published November 11, 2009.
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April 27, 2016
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© 2010, Published by the BMJ Publishing Group Limited. For permission to use (where not already granted under a licence) please go to http://group.bmj.com/group/rights-licensing/permissions.