1. Tobacco Center on Regulatory Science, University of Vermont, Burlington, Vermont;
2. Center of Excellence in Regulatory Tobacco Science, The Ohio State University, Columbus, Ohio;
3. Center for Evaluation and Coordination of Training and Research in Tobacco Regulatory Science, Westat, Rockville, Maryland;
4. Department of Oncology, Georgetown University Medical Center, Washington, District of Columbia; and
5. Rehabilitation Institute, Southern Illinois University, Carbondale, Illinois