1. Cancer Prevention and Control, Duke Cancer Institute, Durham, North Carolina
2. Department of Population Health Sciences, Duke University School of Medicine, Durham, North Carolina
3. Department of Biostatistics, Duke University School of Medicine, Durham, North Carolina
4. Durham Center of Innovation to Accelerate Discovery and Practice Transformation, Durham Veterans Affairs Health Care System, Durham, North Carolina
5. Duke Clinical Research Institute, Durham, North Carolina
6. Geriatric Research, Education, and Clinical Center (GRECC), Veterans Affairs Medical Center, Durham, North Carolina
7. Department of Medicine, Duke University School of Medicine, Durham, North Carolina