To Vape or Not to Vape: The Truth About E cigarettes Lions Talk Science National Emphysema Foundation E cigarettes are Poor Substitutes for Conventional Smoking in COPD Patients Can E cigarettes help COPD patients quit smoking and reduce harm to lungs? Links to E Cigarette Resources American Lung Association E Cigarettes Linked to COPD and Hypertension Are E Cigarettes a Safe Alternative to Smoking? Using Airway Cell Cultures to Assess Early Indicators of COPD Progression Inquiries Journal