1. Division of Nutrition, Physical Activity, and Obesity, National Center for Chronic Disease Prevention and Health Promotion, Centers for Disease Control and Prevention, Atlanta, Georgia
2. Epidemic Intelligence Service, Centers for Disease Control and Prevention, Atlanta, Georgia
3. Oak Ridge Institute for Science and Education Research Participation Program, Oak Ridge, Tennessee
4. Division of Population Health, National Center for Chronic Disease Prevention and Health Promotion, Centers for Disease Control and Prevention, Atlanta, Georgia