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Diagnosing COPD in non-smokers: splitting not lumping
- Correspondence to Professor Edwin R Chilvers, Respiratory Medicine Division, Department of Medicine, University of Cambridge School of Clinical Medicine, Box 157, Level 5 Addenbrooke's Hospital, Hills Road, Cambridge CB2 0QQ, UK; erc24{at}cam.ac.uk
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Diagnosing COPD in non-smokers: splitting not lumping
Publication history
- First published June 3, 2010.
Online issue publication
September 01, 2022
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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.