[1] Univ Calif Los Angeles, David Geffen Sch Med, Dept Psychiat & Biobehavioral Sci, Cousins Ctr Psychoneuroimmunol,Semel Inst Neurosc, Los Angeles, CA 90095 USA
[2] Charite Univ Med Berlin, Dept Psychiat, Campus Benjamin Franklin, Berlin, Germany
[3] Univ Calif Los Angeles, Dept Psychol, Coll Arts & Sci, Los Angeles, CA 90024 USA
[4] Univ Calif Los Angeles, David Geffen Sch Med, Div Geriatr, Los Angeles, CA 90024 USA