1. Department of Psychiatry and Behavioral Sciences and Alzheimer’s Center, Stanford University, Stanford, CA 94305, USA
2. War Related Illness and Injury Study Center and Alzheimer’s Center, VA Palo Alto Health Care System, Palo Alto, CA 94304, USA
3. Department of Psychology, College of San Mateo, San Mateo, CA 94402, USA
4. Department of Health Sciences, University of Hartford, West Hartford, CT 06117, USA