Abouk and Adams (2017) study the effect of e-cigarettes minimum age of sale on cigarette and e-cigarette use. Based on this study, what happens to the prevalence of cigarette use among 12^th graders when states ban e-cigarette sales to minors? How these laws affect their use of e-cigarettes? Based on this study, e-cigarettes and cigarettes are substitutes or complements? Based on this study, Should the government ban e-cigarette sales or not to enhance public health?

Reference: Abouk, R., & Adams, S. (2017). Bans on electronic cigarette sales to minors and smoking among high school students.Journal of Health Economics,54, 17-24.