Affiliation: | 1. Division of Geriatrics, Department of Internal Medicine, Duke School of Medicine, Durham, North Carolina, USA;2. Division of Geriatric and Palliative Medicine, Department of Medicine, University of Michigan, Ann Arbor, Michigan, USA;3. Division of Geriatrics, Department of Internal Medicine, Duke School of Medicine, Durham, North Carolina, USA Center for Study of Aging and Human Development, Duke University School of Medicine, Durham, North Carolina, USA;4. Center for Study of Aging and Human Development, Duke University School of Medicine, Durham, North Carolina, USA Department of Biostatistics and Bioinformatics, Duke University School of Medicine, Durham, North Carolina, USA;5. Division of Geriatrics, Department of Internal Medicine, Duke School of Medicine, Durham, North Carolina, USA Center for Study of Aging and Human Development, Duke University School of Medicine, Durham, North Carolina, USA Geriatrics Research, Education and Clinical Center, Veterans Affairs Medical Center, Durham, North Carolina, USA |