1. Department of Veterans Affairs, Birmingham/Atlanta Geriatric Research Education and Clinical Center, Atlanta, GA, USA
2. Atlanta VA Health Care System, Atlanta, GA, USA
3. Division of General Medicine and Geriatrics, Department of Medicine, Emory University School of Medicine, Atlanta, GA, USA
4. Division of Endocrinology, Metabolism and Lipids, Department of Medicine, Emory University School of Medicine, Atlanta, GA, USA
5. Geriatric Research Education and Clinical Center, VA North Florida/South Georgia Veterans Health System, Gainesville, FL, USA