Frontiers More to Explore: Further Definition of Risk Factors for COPD Differential Gender Difference, Modest Elevation in PM2.5, and e Cigarette Use Smoking, e Cigarettes, Nicotine, & Lupus Lupus Corner E cigarettes and cardiopulmonary health: A review for clinicians COPD Symptoms, Causes, risk factors, Prevention and Treatment National Emphysema Foundation E cigarettes and Vaping Just As Bad On Lung Health As Cigarettes Cigarette smoke can reprogram cells in your airways, causing pulmonary disease to hang on after smoking ends