1. Office on Smoking and Health, National Center for Chronic Disease Prevention and Health Promotion, Centers for Disease Control and Prevention, Atlanta, GA
2. Office on Smoking and Health, National Center for Chronic Disease Prevention and Health Promotion, Centers for Disease Control and Prevention, Atlanta, GA (current affiliation: Institute of Public Health, College of Health and Human Sciences, Georgia State University, Atlanta, GA)
3. Office on Smoking and Health, Centers for Disease Control and Prevention, Washington, DC (current affiliation: Center for Devices and Radiologic Health, Office of Science and Engineering Laboratories, Food and Drug Administration, Rockville, MD)