1. Department of Behavioral Sciences and Health Education, Emory University School of Public Health, Atlanta
2. Department of Medicine, Division of General Internal Medicine and Center for Tobacco Control Research and Education, University of California
3. Division of Biostatistics and Clinical and Translational Science Institute, University of Minnesota
4. Department of Behavioral Sciences and Health Education, Emory University School of Public Health
5. Department of Medicine, Division of General Internal Medicine, University of Minnesota
6. Department of Medicine, Division of General Internal Medicine, University of Michigan