E cigs: What You Need to Know if You Care for Patients with COPD Challenges in COPD E cigarette use increases odds of developing asthma, COPD Exclusive E cigarette Use Significantly Associated with COPD RT Increased risk of COPD observed in individuals using e cigarette: Study Frontiers More to Explore: Further Definition of Risk Factors for COPD Differential Gender Difference, Modest Elevation in PM2.5, and e Cigarette Use The Impact of E Cigarettes on the Lung Providers AmeriHealth Caritas Pennsylvania