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