1. Tobacco Center of Regulatory Science, Institute for Health Promotion and Disease Prevention Research, Department of Preventive Medicine, Keck School of Medicine, University of Southern California, Los Angeles, California
2. Department of Health Sciences, Health Equity Research and Education Center, California State University, Northridge, California
3. Norris Comprehensive Cancer Center, University of Southern California, Los Angeles, California
4. Colorado School of Public Health, Aurora, Colorado