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Audit, research and guideline update
Design of the Subpopulations and Intermediate Outcomes in COPD Study (SPIROMICS)
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Authors

  1. Correspondence to Dr David Couper, Department of Biostatistics, University of North Carolina at Chapel Hill, CSCC, 137 E. Franklin Street, Suite 203, Chapel Hill, NC 27514, USA; david_couper{at}unc.edu
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Citation

Couper D, LaVange LM, Han M, et al
Design of the Subpopulations and Intermediate Outcomes in COPD Study (SPIROMICS)

Publication history

  • Received May 21, 2013
  • Revised August 22, 2013
  • Accepted August 28, 2013
  • First published September 12, 2013.
Online issue publication 
April 12, 2014

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