[1] Kumamoto Univ, Dept Psychiat & Neuropathobiol, Fac Med & Pharmaceut Sci, Kumamoto 8608556, Japan
[2] Ehime Univ, Grad Sch Med, Dept Neuropsychiat, Shitsukawa, Ehime, Japan
[3] Jikei Univ, Sch Med, Dept Psychiat, Tokyo, Japan
[4] Hyogo Prefectural Rehabil Hosp Nishi Harima, Dept Neuropsychiat, Nishi Harima, Hyogo, Japan
[5] Hyogo Brain & Heart Ctr, Inst Aging Brain & Cognit Disorders, Himeji, Hyogo, Japan
[6] Japan Self Def Forces Hanshin Hosp, Dept Psychiat, Kawanishi, Hyogo, Japan