1. Birmingham/Atlanta Geriatric Research, Education, and Clinical Center (GRECC), Department of Veterans Affairs, Decatur, GA, US
2. Atlanta Department of Veterans Affairs Medical Center, Decatur, GA, US
3. Department of Medicine, Emory University, Atlanta, GA, US
4. VA Geriatric Research Education and Clinical Center, North Florida/South Georgia Veterans Health System, Gainesville, FL, US
5. Department of Family and Preventive Medicine, Emory University, Atlanta, GA, US