1. Department of Epidemiology and Biostatistics, College of Public Health, University of Georgia, Athens, Georgia, USA
2. Department of Family Medicine and Community Health, University of Minnesota Twin Cities, Minneapolis, Minnesota, USA
3. Humphrey School of Public Affairs, University of Minnesota Twin Cities, Minneapolis, Minnesota, USA
4. Department of Pediatrics, Center for Pediatric Obesity Medicine, University of Minnesota Twin Cities, Minneapolis, Minnesota, USA