Vaping May Seem Safer Than Cigarette Smoking, but It Still Raises Lung Disease Risk Analysis underscores the health risks of e cigarettes Pulmonary COPD and Vaping: Understanding the Risks and Long Term Effects What COPD Patients Should Know About Vaping and E Cigarettes LPT Medical Electronic Cigarette Use in US Adults at Risk for or with COPD: Analysis from Two Observational Cohorts Journal of General Internal Medicine Springer Nature Link