1. Cancer Prevention Program, Moores Cancer Center, and
2. Department of Family Medicine and Public Health, University of California, San Diego, La Jolla, California;
3. C. Everett Koop Institute, Norris Cotton Cancer Center, Geisel School of Medicine at Dartmouth, Hanover, New Hampshire;
4. Center for Tobacco Products, US Food and Drug Administration, Silver Spring, Maryland;
5. National Institute on Drug Abuse, National Institutes of Health, Bethesda, Maryland;
6. Kelly Government Solutions, Rockville, Maryland;
7. Tobacco Control Research Branch, Behavioral Research Program, Division of Cancer Control and Population Sciences, National Cancer Institute, National Institutes of Health, Rockville, Maryland;
8. Westat, Rockville, Maryland;
9. Department of Oncology, Cancer Prevention and Control Program, Lombardi Comprehensive Cancer Center, Georgetown University Medical Center, Washington, District of Columbia;
10. Department of Health Behavior, Roswell Park Cancer Institute, Buffalo, New York;
11. Department of Health, Behavior, and Society, Bloomberg School of Public Health, Johns Hopkins University, Baltimore, Maryland; and
12. Schroeder Institute for Tobacco Research and Policy Studies at Truth Initiative, Washington, District of Columbia