1. Department of Biology Duke University Durham North Carolina USA
2. Duke Global Health Institute Durham North Carolina USA
3. Duke University School of Nursing Durham North Carolina USA
4. Department of Psychology Duke University Durham North Carolina USA
5. Department of Family Medicine and Community Health Duke University School of Medicine Durham North Carolina USA
6. Department of Medicine, Division of Geriatrics Duke University School of Medicine Durham North Carolina USA
7. Durham Veterans Administration Durham North Carolina USA
8. Geriatrics Research Education and Clinical Center Durham North Carolina USA