1. a Veterans Affairs at Loma Linda , Loma Linda , CA , USA
2. b Department of Neurology , David Geffen School of Medicine at UCLA , Los Angeles , CA , USA
3. c Department of Psychiatry and Biobehavioral Sciences , David Geffen School of Medicine at UCLA , Los Angeles , CA , USA
4. d Minneapolis Veterans Affairs Medical Center and University of Minnesota , Minneapolis , MN , USA
5. e Westmont College, Department of Psychology , Santa Barbara , CA , USA