1. The Center for Cognitive Medicine, Department of Psychiatry and Behavioral Sciences; Vanderbilt University Medical Center; Nashville TN USA
2. Department of Psychiatry and Behavioral Sciences; Duke University Medical Center; Durham NC USA
3. Department of Psychiatry; University of Connecticut Health Center; Farmington CT USA
4. Geriatric Research, Education and Clinical Center, Department of Veterans Affairs Medical Center; Tennessee Valley Healthcare System; Nashville TN USA