1. Birmingham/Atlanta Geriatric Research, Education, and Clinical Center (GRECC), Department of Veterans Affairs, Birmingham, Alabama and Atlanta, Georgia.
2. Department of Medicine, University of Alabama at Birmingham, Birmingham, Alabama.
3. Department of Psychology/CMHA, University of Alabama, Tuscaloosa, Alabama.
4. Department of Biostatistics, University of Alabama, Tuscaloosa, Alabama.
5. Department of Biostatistics, University of Alabama at Birmingham, Birmingham, Alabama.