1. Department of Nutrition University of North Carolina at Chapel Hill Chapel Hill North Carolina USA
2. Department of Biostatistics University of North Carolina at Chapel Hill Chapel Hill North Carolina USA
3. Health Sciences Library University of North Carolina at Chapel Hill Chapel Hill North Carolina USA
4. Department of Medicine California University of Science and Medicine Colton California USA
5. Department of Epidemiology University of North Carolina at Chapel Hill Chapel Hill North Carolina USA
6. School of Information and Library Science University of North Carolina at Chapel Hill Chapel Hill North Carolina USA
7. Division of Geriatric Medicine, Department of Medicine, Center for Aging and Health, School of Medicine University of North Carolina Chapel Hill North Carolina USA
8. Department of Statistics and Operations Research University of North Carolina at Chapel Hill Chapel Hill North Carolina United States