[1] Stanford Univ, Psychiat, Stanford, CA 94305 USA
[2] Stanford Univ, Psychol, Stanford, CA 94305 USA
[3] USC, Imaging Genet Ctr, Los Angeles, CA USA
[4] USC, Lab Neuro Imaging, Keck Sch Med, Los Angeles, CA USA
[5] Stanford Univ, Neurol & Neurol Sci, Stanford, CA 94305 USA