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 Division of Nutrition, Physical Activity, and Obesity, Centers for Disease Control and Prevention, 4770 Buford Highway NE, MS S107-5, Atlanta, GA 30341 (dbg6@cdc.gov).
3 University of Florida, Institute of Food and Agricultural Sciences, Department of Family, Youth and Community Sciences, Gainesville, Florida.