[1] Hirosaki Univ, Grad Sch Med, Dept Neuropsychiat, Hirosaki, Aomori 0368562, Japan
[2] Mutsu City Hosp, Dept Mental Hlth, Mutsu, Aomori, Japan
[3] Natl Ctr Neurol & Psychiat, Translat Med Ctr, Dept Clin Epidemiol, Kodaira, Tokyo, Japan
[4] Hirosaki Aiseikai Hosp, Dept Neuropsychiat, Hirosaki, Aomori, Japan
[5] Kuroishi Akebono Hosp, Dept Neuropsychiat, Kuroishi, Aomori, Japan