E cigarette or Vaping Use Associated Lung Injury (EVALI) American Lung Association Electronic Cigarette Use Linked to Higher COPD Risk in US, Study Says Electronic cigarette use and its association with asthma, chronic obstructive pulmonary disease (COPD) and asthma COPD overlap syndrome among never cigarette smokers The role of cigarette smoke induced pulmonary vascular endothelial cell apoptosis in COPD Respiratory Research Springer Nature Link