Frontiers Inhalation of nicotine containing electronic cigarette vapor exacerbates the features of COPD by inducing ferroptosis in ENaC overexpressing mice Older users of e cigarettes at greater risk of respiratory illness, study suggests CUNY Graduate School of Public Health & Health Policy Analysis underscores the health risks of e cigarettes Pulmonary Frontiers Electronic Cigarette Exposure Enhances Lung Inflammatory and Fibrotic Responses in COPD Mice