Mortality in GOLD stages of COPD and its dependence on symptoms of chronic bronchitis
<p>Abstract</p> <p>Background</p> <p>The GOLD classification of COPD severity introduces a stage 0 (at risk) comprising individuals with productive cough and normal lung function. The aims of this study were to investigate total mortality risks in GOLD stages 0–4 with s...
Main Authors: | , , , , |
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Format: | Article |
Language: | English |
Published: |
BMC
2005-08-01
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Series: | Respiratory Research |
Subjects: | |
Online Access: | http://respiratory-research.com/content/6/1/98 |