The role of cigarette smoke induced pulmonary vascular endothelial cell apoptosis in COPD Respiratory Research Springer Nature Link Chronic Bronchitis Vs Emphysema The evolving epidemiology, disease trajectories and etiotypes of COPD ScienceDirect Frontiers Chronic obstructive pulmonary disease (COPD) and COPD like phenotypes COPD: Chronic Bronchitis vs. Emphysema COPD is an umbrella term that commonly includes chronic bronchitis and emphysema, two conditions with very different presentations. Chronic Bronchitis (Blue Bloater) Productive cough Association of electronic cigarette use and risk of COPD: a systematic review and meta analysis npj Primary Care Respiratory Medicine