Teens who vape higher doses of nicotine are more likely to become regular smokers USC Today Nicotine in electronic cigarettes Journal of Umm Al Qura University for Applied Sciences Springer Nature Link What Is The Real Cost? Smoking and Tobacco Facts Nicotine absorption from electronic cigarette use: comparison between first and new generation devices Scientific Reports E Cigarette Use Among Youth Smoking and Tobacco Use CDC Vaping Versus Smoking: Are Electronic Cigarettes the Savior? Arteriosclerosis, Thrombosis, and Vascular Biology