E cigarettes: Teens who vape are more likely to smoke later, study says Los Angeles Times Is Vaping Better Than Smoking? American Heart Association Johns Hopkins researchers find thousands of unknown chemicals in electronic cigarettes Hub E cigarettes or Vapes to Quit Smoking Haleon HealthPartner Are e cigarettes dangerous, or a better alternative to tobacco? Vaping Safety, Smoking, Dangers, Pros, Cons, Debate, E cigarettes, & Tobacco Britannica