Article info
Chest clinic
Audit, research and guideline update
Design of the Subpopulations and Intermediate Outcomes in COPD Study (SPIROMICS)
- 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
Citation
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
Article Versions
- Previous version (12 September 2013).
- You are viewing the most recent version of this article.
Supplementary Data
This web only file has been produced by the BMJ Publishing Group from an electronic file supplied by the author(s) and has not been edited for content.
Files in this Data Supplement:
- Data supplement 1 - Online tables
Request permissions
If you wish to reuse any or all of this article please use the link below which will take you to the Copyright Clearance Center’s RightsLink service. You will be able to get a quick price and instant permission to reuse the content in many different ways.
Copyright information
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