Affiliation: | 1. University of North Carolina at Chapel Hill, , Chapel Hill, North Carolina;2. School of Nursing, Duke University, , Durham, North Carolina;3. Carolinas Center for Medical Excellence, Inc., , Cary, North Carolina;4. School of Nursing, University of Pennsylvania, , Philadelphia, Pennsylvania;5. School of Medicine Duke University, , Durham, North Carolina;6. Geriatric Research, Education and Clinical Center, Durham Veterans Affairs Medical Center, , Durham, North Carolina |