[1] Emory Univ, Sch Med, Dept Psychiat & Behav Sci, Atlanta, GA 30322 USA
[2] Emory Univ, Sch Med, Dept Human Genet, Atlanta, GA USA
[3] Morehouse Sch Med, Atlanta, GA 30310 USA
[4] Atlanta VA Med Ctr, Atlanta, GA USA
[5] Howard Hughes Med Inst, Chevy Chase, MD USA