Extract
COPD is a group of conditions that includes chronic bronchitis and emphysema.
- ©ERS 2017
Breathe articles are open access and distributed under the terms of the Creative Commons Attribution Non-Commercial Licence 4.0.
COPD is a group of conditions that includes chronic bronchitis and emphysema.
Breathe articles are open access and distributed under the terms of the Creative Commons Attribution Non-Commercial Licence 4.0.