1. School of Nursing, University of Pennsylvania, Philadelphia, PA, USA
2. Nell Hodgson Woodruff School of Nursing, Emory University, Atlanta, GA, USA
3. School of Nursing, John Hopkins University, Baltimore, MD, USA
4. Division of Geriatric Medicine, Department of Medicine, University of Pennsylvania, Philadelphia, PA, USA
5. College of Nursing and Health Professions, Drexel University, Philadelphia, PA, USA