E cigarettes have 10 times more carcinogens, Japanese researchers say South China Morning Post What to Know About Electronic Cigarettes (E Cigarettes) E cigarette users show cancer linked genetic changes The Truth About E Cigarettes: What Parents, Teens & the Public Should Know Pine Rest Newsroom Carcinogens found in regular cigarettes are in e cigarettes, too, study finds The Washington Post E cigarettes Stress Lungs, Impair Protein Function News Release PNNL