[1] Univ Tokyo, Grad Sch Med, Tokyo 1138654, Japan
[2] Tokyo Metropolitan Inst Med Sci, Tokyo, Japan
[3] Univ Tokyo, Off Mental Hlth Support, Tokyo 1138654, Japan
[4] Grad Univ Adv Studies, Tokyo, Japan
[5] Univ Tokyo, Grad Sch Med, Dept Neuropsychiat, Tokyo 1138654, Japan
[6] Univ Tsukuba, Div Psychol, Fac Human Sci, Tsukuba, Ibaraki 305, Japan