1. Center for Research in Nutrition and Health Disparities, Department of Epidemiology and Biostatistics, Arnold School of Public Health, University of South Carolina, Columbia, South Carolina
2. Department of Ambulatory Care and Prevention, Harvard Medical School and Harvard Pilgrim Health Care, Boston, Massachusetts
3. Channing Laboratory, Brigham and Women’s Hospital, Boston, Massachusetts
4. Department of Nutrition, Harvard School of Public Health, Boston, Massachusetts
5. Department of Epidemiology, Harvard School of Public Health, Boston, Massachusetts