1. Department of Health Behavior, Roswell Park Cancer Institute, Buffalo NY
2. Department of Psychiatry and Behavioral Sciences, Medical University of South Carolina, Charleston SC
3. UCSF School of Medicine, San Francisco CA
4. Department of Psychology, University of Waterloo, Waterloo, Canada
5. Department of Health Promotion, Education, and Behavior, University of South Carolina, Columbia, SC
6. Department of Tobacco Research, National Institute of Public Health, Cuernavaca, Mexico