Chronic obstructive pulmonary disease (COPD) is a group of diseases, including chronic bronchitis and emphysema, that block your airways and make it hard for you to breathe. Today, doctors understand what causes
JCM | Free Full-Text | Chronic Obstructive Pulmonary Disease: Epidemiology, Biomarkers, and Paving the Way to Lung Cancer
COPD phenotypes: Blue Bloaters vs. Pink Puffers The ... | GrepMed