1. Channing Laboratory Brigham and Women's Hospital and Harvard Medical School Boston Massachusetts
2. Department of Health Promotion Education, and Behavior, Arnold School of Public Health University of South Carolina Columbia South Carolina
3. Division of Nutritional Sciences Cornell University Ithaca New York
4. Tuscany Regional Health Agency Florence Italy
5. Molecular and Nutritional Epidemiology Unit Cancer Research and Prevention Institute Florence Italy
6. Division of Geriatric Medicine MUHC‐Royal Victoria Hospital McGill University Montreal Quebec Canada
7. Department of Clinical and Experimental Medicine Section of Internal Medicine Gerontology and Geriatrics University of Ferrara Ferrara Italy
8. Department of Epidemiology and Public Health Division of Gerontology University of Maryland School of Medicine Baltimore Maryland
9. Biomedical Research Center National Institute on Aging National Institutes of Health Baltimore Maryland