M Spires1, L Rutkow2, I Feldhaus3, J E Cohen4. 1. Institute for Global Tobacco Control, Department of Health, Behavior and Society - Johns Hopkins University, Bloomberg School of Public Health, 2213 McElderry Street (4th Floor), Baltimore, MD 21205, USA. Electronic address: mspires@jhsph.edu. 2. Department of Health Policy and Management - Johns Hopkins University, Bloomberg School of Public Health, 624 N Broadway (Room 513), Baltimore, MD 21205, USA. 3. Department of International Health - Johns Hopkins University, Bloomberg School of Public Health, 615 N Wolfe Street, Baltimore, MD 21205, USA. 4. Institute for Global Tobacco Control, Department of Health, Behavior and Society - Johns Hopkins University, Bloomberg School of Public Health, 2213 McElderry Street (4th Floor), Baltimore, MD 21205, USA.