Frontiers Electronic Cigarette Exposure Enhances Lung Inflammatory and Fibrotic Responses in COPD Mice Frontiers More to Explore: Further Definition of Risk Factors for COPD Differential Gender Difference, Modest Elevation in PM2.5, and e Cigarette Use Chronic electronic cigarette exposure in mice induces features of COPD in a nicotine dependent manner Thorax Former Smokers Have Greater Chance of Chronic Obstructive Pulmonary Disease E cigarette or Vaping Use Associated Lung Injury (EVALI) American Lung Association