1. Emory University College of Arts and Sciences, Atlanta, GA, USA
2. Atlanta Veterans Affairs Medical Center, Decatur, GA, USA
3. Birmingham/Atlanta VA Geriatric Research, Education, and Clinical Center, Atlanta VA Health Care System, Decatur, GA
4. Emory University School of Medicine, Atlanta, GA, USA
5. Emory University, Rollins School of Public Health, Atlanta, GA, USA