Justin Byron, PhD, MHS is the principal investigator on a grant from the Bloomberg Foundation and the Johns Hopkins Institute for Global Tobacco Control to examine whether a new 57% tax on e-cigarette liquids in Indonesia is driving vapers back to deadly conventional cigarettes. The research team includes Sarah Kowitt, Adam Goldstein, and Leah Ranney from the UNC Family Medicine Tobacco Prevention and Evaluation Program, Elizabeth Orlan from the school of public health, and Dien Anshari from Universitas Indonesia. The study recruits vapers using Facebook ads and surveys their vaping and smoking behaviors before and after the tax implementation date. The findings will inform public health and government officials in other countries considering similar measures.