Electronic Cigarette Use Linked to Higher COPD Risk in US, Study Says Association of electronic cigarette use and risk of COPD: a systematic review and meta analysis npj Primary Care Respiratory Medicine Vaping Nicotine Impairs Airway Clearance RT Association of tobacco product use with chronic obstructive pulmonary disease (COPD) prevalence and incidence in Waves 1 through 5 (20132019) of the Population Assessment of Tobacco and Health (PATH) Study Respiratory Vaping, Similar to Cigarette Smoking, May Increase Emphysema Risk Chronic obstructive pulmonary disease Nature Reviews Disease Primers