1. Department of Health Behavior, Gillings School of Global Public Health, University of North Carolina at Chapel Hill , Chapel Hill, North Carolina, USA
2. Carolina Population Center, University of North Carolina at Chapel Hill , Chapel Hill, North Carolina, USA
3. Department of Nutrition, Harvard T.H. Chan School of Public Health , Boston, Massachusetts, USA
4. Department of Pediatrics, Stanford University School of Medicine , Palo Alto, California, USA
5. Department of Human Ecology, University of California (UC) Davis , Davis, California, USA
6. Department of Nutrition, Gillings School of Global Public Health, University of North Carolina at Chapel Hill , Chapel Hill, North Carolina, USA
7. Hussman School of Journalism and Media, University of North Carolina at Chapel Hill , Chapel Hill, North Carolina, USA
8. Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill , Chapel Hill, North Carolina, USA
9. Health Sciences Library, University of North Carolina at Chapel Hill , Chapel Hill, North Carolina, USA