1. Population Health, Grossman School of Medicine New York University New York NY USA
2. Epidemiology, School of Public Health University of Michigan Ann Arbor MI USA
3. Health Promotion, Education, and Behavior, Arnold School of Public Health University of South Carolina Columbia SC USA
4. Tobacco Research, Center for Population Health Research National Institute of Public Health Cuernavaca Mexico
5. Oncology, Lombardi Comprehensive Cancer Center Georgetown University Washington DC USA
6. Biostatistics, School of Public Health University of Michigan Ann Arbor MI USA
7. Survey Research Center Institute for Social Research, University of Michigan Ann Arbor MI USA
8. Institute for Social Research University of Michigan Ann Arbor MI USA