COPD Information and Support,
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3845712/
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3845712/
Frequent exacerbations of chronic obstructive pulmonary disease (COPD) have negative effects on quality of life and survival.
Frequent exacerbations of chronic obstructive pulmonary disease (COPD) have negative effects on quality of life and survival.