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Chronic bronchitis before age 50 years predicts incident airflow limitation and mortality risk
  1. Correspondence to Dr S Guerra, Arizona Respiratory Center, University of Arizona, 1501 N. Campbell Ave, PO Box 245030, Tucson, AZ 85724-5030, USA; sguerra{at}arc.arizona.edu
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Citation

Guerra S, Sherrill DL, Venker C, et al
Chronic bronchitis before age 50 years predicts incident airflow limitation and mortality risk

Publication history

  • Received November 4, 2008
  • Accepted June 2, 2009
  • First published July 5, 2009.
Online issue publication 
September 28, 2009

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