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Coal workers' pneumoconiosis and progressive massive fibrosis are increasingly more prevalent among workers in small underground coal mines in the United States
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  1. Correspondence to A Scott Laney, Surveillance Branch, Division of Respiratory Disease Studies, National Institute for Occupational Safety and Health, Centers for Disease Control and Prevention, 1095 Willowdale Road, Mail Stop HG900.2, Morgantown, WV 26505–2888, USA; alaney{at}cdc.gov
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Laney AS, Attfield MD
Coal workers' pneumoconiosis and progressive massive fibrosis are increasingly more prevalent among workers in small underground coal mines in the United States

Publication history

  • Accepted November 12, 2009
  • First published June 3, 2010.
Online issue publication 
June 03, 2010

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