Are vape pens, or e cigarettes, ever the better option? Ohio State Health & Discovery Vapes VS. Cigarettes, Which One Is Safer? 5 Vaping Facts You Need to Know Johns Hopkins Medicine Stop Smoking E Cigarettes CardioSmart American College of Cardiology Nicotine absorption from electronic cigarette use: comparison between first and new generation devices Scientific Reports Infographic: Dangers of E cigarettes & Toxicity UPMC HealthBeat