The pros and cons of e cigarettes revealed National Study Links E Cigarettes To Tobacco Use KCUR Kansas City news and NPR The Root Cause in Electronic Cigarette Failures National Forensic Consultants, Inc. E cigarettes didn't help smokers quit, study says CNN Ohio State Cancer Researcher Calls for National Vaping Plan Early research says secondhand smoke from vaping may not be as bad as cigarettes, but it's still not harmless. https: fox59.com news national world does vaping cause secondhand smoke doctors explain the side effects